You are not correct; we do not use 'than' when using only 'times' to express a ratio, in your case 200 to one. If you used an adjective of comparison, e.g. more, bigger, larger, etc, you could write 'than'.

The price of gold per kilogramme is $60,000. The price of lead per kilogramme is $2.

The price of gold per kilogramme is 30,000 times that of lead.

The price of gold per kilogramme is 30,000 times bigger than that of lead.

You are not correct; we do not use 'than' when using only 'times' to express a ratio, in your case 200 to one. If you used an adjective of comparison, e.g. more, bigger, larger, etc, you would write 'than'.

The price of gold per kilogramme is $60,000. The price of lead per kilogramme is $2.

The price of gold per kilogramme is 30,000 times that of lead.

The price of gold per kilogramme is 30,000 times bigger than that of lead.

You are not correct; we do not use 'than' when using only 'times' to express a ratio, in your case 200 to one. If you used an adjective of comparison, e.g. bigger, larger, etc, you could write 'than'.

The price of gold per kilogramme is $60,000. The price of lead per kilogramme is $2.

The price of gold per kilogramme is 30,000 times that of lead.

The price of gold per kilogramme is 30,000 times bigger than that of lead.

You are not correct; we do not use 'than' when using only 'times' to express a ratio, in your case 200 to one. If you used an adjective of comparison, e.g. more, bigger, larger, etc, you could write 'than'.

The price of gold per kilogramme is $60,000. The price of lead per kilogramme is $2.

The price of gold per kilogramme is 30,000 times that of lead.

The price of gold per kilogramme is 30,000 times bigger than that of lead.