Finding the Fourth Proportional to 318,889,803.42, 440,067,934.23 and 172,212,087.42
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Solution
The fourth proportional to 318,889,803.42, 440,067,934.23 and 172,212,087.42 is: 237,652,683.62
Step by Step Solution
- Step 1: Write the proportion equation
318,889,803.42 : 440,067,934.23 = 172,212,087.42 : x - Step 2: Convert to fraction form
318,889,803.42/440,067,934.23 = 172,212,087.42/x - Step 3: Cross multiply
318,889,803.42x = 440,067,934.23 × 172,212,087.42 - Step 4: Simplify right side
318,889,803.42x = 75,785,017,560,355,568 - Step 5: Solve for x
x = 75,785,017,560,355,568/318,889,803.42 - Step 6: Final answer
x = 237,652,683.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.