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Finding the Fourth Proportional to 485,500.28, 728,337.92 and 148,534.61

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Solution

The fourth proportional to 485,500.28, 728,337.92 and 148,534.61 is: 222,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,500.28 : 728,337.92 = 148,534.61 : x
  2. Step 2: Convert to fraction form
    485,500.28/728,337.92 = 148,534.61/x
  3. Step 3: Cross multiply
    485,500.28x = 728,337.92 × 148,534.61
  4. Step 4: Simplify right side
    485,500.28x = 108,183,384,511.05
  5. Step 5: Solve for x
    x = 108,183,384,511.05/485,500.28
  6. Step 6: Final answer
    x = 222,828.68

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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.