Finding the Fourth Proportional to 257,545.80, 386,318.70 and 253,171.80
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Solution
The fourth proportional to 257,545.80, 386,318.70 and 253,171.80 is: 379,757.70
Step by Step Solution
- Step 1: Write the proportion equation
257,545.80 : 386,318.70 = 253,171.80 : x - Step 2: Convert to fraction form
257,545.80/386,318.70 = 253,171.80/x - Step 3: Cross multiply
257,545.80x = 386,318.70 × 253,171.80 - Step 4: Simplify right side
257,545.80x = 97,805,000,652.66 - Step 5: Solve for x
x = 97,805,000,652.66/257,545.80 - Step 6: Final answer
x = 379,757.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.