French Polynesia is about 43 times smaller than Missouri.

Missouri is approximately 178,414 sq km, while French Polynesia is approximately 4,167 sq km, making French Polynesia 2.34% the size of Missouri. Meanwhile, the population of Missouri is ~6.0 million people (5.7 million fewer people live in French Polynesia).
Tip: This to-scale comparison of Missouri vs. French Polynesia uses the Mercator projection, which distorts the size of regions near the poles.