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Finding the Fourth Proportional to 389,732.43, 584,635.92 and 109,248.87

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Solution

The fourth proportional to 389,732.43, 584,635.92 and 109,248.87 is: 163,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,732.43 : 584,635.92 = 109,248.87 : x
  2. Step 2: Convert to fraction form
    389,732.43/584,635.92 = 109,248.87/x
  3. Step 3: Cross multiply
    389,732.43x = 584,635.92 × 109,248.87
  4. Step 4: Simplify right side
    389,732.43x = 63,870,813,621.41
  5. Step 5: Solve for x
    x = 63,870,813,621.41/389,732.43
  6. Step 6: Final answer
    x = 163,883.75

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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.