Finding the Fourth Proportional to 378,898.48, 522,877.28 and 209,132.56
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Solution
The fourth proportional to 378,898.48, 522,877.28 and 209,132.56 is: 288,601.49
Step by Step Solution
- Step 1: Write the proportion equation
378,898.48 : 522,877.28 = 209,132.56 : x - Step 2: Convert to fraction form
378,898.48/522,877.28 = 209,132.56/x - Step 3: Cross multiply
378,898.48x = 522,877.28 × 209,132.56 - Step 4: Simplify right side
378,898.48x = 109,350,664,132.24 - Step 5: Solve for x
x = 109,350,664,132.24/378,898.48 - Step 6: Final answer
x = 288,601.49
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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.