Finding the Fourth Proportional to 385,266.53, 531,691.49 and 215,512.13
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Solution
The fourth proportional to 385,266.53, 531,691.49 and 215,512.13 is: 297,419.98
Step by Step Solution
- Step 1: Write the proportion equation
385,266.53 : 531,691.49 = 215,512.13 : x - Step 2: Convert to fraction form
385,266.53/531,691.49 = 215,512.13/x - Step 3: Cross multiply
385,266.53x = 531,691.49 × 215,512.13 - Step 4: Simplify right side
385,266.53x = 114,585,965,512.77 - Step 5: Solve for x
x = 114,585,965,512.77/385,266.53 - Step 6: Final answer
x = 297,419.98
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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.