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Finding the Fourth Proportional to 501,445.87, 752,279.54 and 185,902.78

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Solution

The fourth proportional to 501,445.87, 752,279.54 and 185,902.78 is: 278,895.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,445.87 : 752,279.54 = 185,902.78 : x
  2. Step 2: Convert to fraction form
    501,445.87/752,279.54 = 185,902.78/x
  3. Step 3: Cross multiply
    501,445.87x = 752,279.54 × 185,902.78
  4. Step 4: Simplify right side
    501,445.87x = 139,850,853,132.21
  5. Step 5: Solve for x
    x = 139,850,853,132.21/501,445.87
  6. Step 6: Final answer
    x = 278,895.21

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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.