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Finding the Fourth Proportional to 318,248.16, 477,372.86 and 81,591.68

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Solution

The fourth proportional to 318,248.16, 477,372.86 and 81,591.68 is: 122,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,248.16 : 477,372.86 = 81,591.68 : x
  2. Step 2: Convert to fraction form
    318,248.16/477,372.86 = 81,591.68/x
  3. Step 3: Cross multiply
    318,248.16x = 477,372.86 × 81,591.68
  4. Step 4: Simplify right side
    318,248.16x = 38,949,653,633.80
  5. Step 5: Solve for x
    x = 38,949,653,633.80/318,248.16
  6. Step 6: Final answer
    x = 122,387.68

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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.