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Finding the Fourth Proportional to 387,555.87, 581,344.76 and 107,073.12

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Solution

The fourth proportional to 387,555.87, 581,344.76 and 107,073.12 is: 160,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,555.87 : 581,344.76 = 107,073.12 : x
  2. Step 2: Convert to fraction form
    387,555.87/581,344.76 = 107,073.12/x
  3. Step 3: Cross multiply
    387,555.87x = 581,344.76 × 107,073.12
  4. Step 4: Simplify right side
    387,555.87x = 62,246,397,248.85
  5. Step 5: Solve for x
    x = 62,246,397,248.85/387,555.87
  6. Step 6: Final answer
    x = 160,612.71

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1.5x scale

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.