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Finding the Fourth Proportional to 484,545.31, 726,760.72 and 129,586.84

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Solution

The fourth proportional to 484,545.31, 726,760.72 and 129,586.84 is: 194,364.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,545.31 : 726,760.72 = 129,586.84 : x
  2. Step 2: Convert to fraction form
    484,545.31/726,760.72 = 129,586.84/x
  3. Step 3: Cross multiply
    484,545.31x = 726,760.72 × 129,586.84
  4. Step 4: Simplify right side
    484,545.31x = 94,178,625,140.92
  5. Step 5: Solve for x
    x = 94,178,625,140.92/484,545.31
  6. Step 6: Final answer
    x = 194,364.95

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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.