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Finding the Fourth Proportional to 221,155.92, 331,732.80 and 63,385.20

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Solution

The fourth proportional to 221,155.92, 331,732.80 and 63,385.20 is: 95,077.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,155.92 : 331,732.80 = 63,385.20 : x
  2. Step 2: Convert to fraction form
    221,155.92/331,732.80 = 63,385.20/x
  3. Step 3: Cross multiply
    221,155.92x = 331,732.80 × 63,385.20
  4. Step 4: Simplify right side
    221,155.92x = 21,026,949,874.56
  5. Step 5: Solve for x
    x = 21,026,949,874.56/221,155.92
  6. Step 6: Final answer
    x = 95,077.49

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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.