Missouri is about 3.2 times smaller than Kenya.

Kenya is approximately 580,367 sq km, while Missouri is approximately 178,414 sq km, making Missouri 30.74% the size of Kenya. Meanwhile, the population of Kenya is ~55.9 million people (49.9 million fewer people live in Missouri).
Tip: This to-scale comparison of Kenya vs. Missouri uses the Mercator projection, which distorts the size of regions near the poles.