1. Convert everything to the same units:

* Since 1 km = 1000 meters, 3 km is equal to 3 * 1000 = 3000 meters.

2. Set up a fraction:

* The fraction representing 200 meters out of 3000 meters is 200/3000.

3. Simplify the fraction:

* Both 200 and 3000 are divisible by 200. Simplifying, we get 1/15.

Answer: 200 meters is 1/15 of 3 km.