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Finding the Fourth Proportional to 485,957.87, 729,076.70 and 149,047.95

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Solution

The fourth proportional to 485,957.87, 729,076.70 and 149,047.95 is: 223,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,957.87 : 729,076.70 = 149,047.95 : x
  2. Step 2: Convert to fraction form
    485,957.87/729,076.70 = 149,047.95/x
  3. Step 3: Cross multiply
    485,957.87x = 729,076.70 × 149,047.95
  4. Step 4: Simplify right side
    485,957.87x = 108,667,387,527.77
  5. Step 5: Solve for x
    x = 108,667,387,527.77/485,957.87
  6. Step 6: Final answer
    x = 223,614.83

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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.