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Finding the Fourth Proportional to 484,439.97, 726,764.94 and 147,471.78

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Solution

The fourth proportional to 484,439.97, 726,764.94 and 147,471.78 is: 221,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,439.97 : 726,764.94 = 147,471.78 : x
  2. Step 2: Convert to fraction form
    484,439.97/726,764.94 = 147,471.78/x
  3. Step 3: Cross multiply
    484,439.97x = 726,764.94 × 147,471.78
  4. Step 4: Simplify right side
    484,439.97x = 107,177,319,343.39
  5. Step 5: Solve for x
    x = 107,177,319,343.39/484,439.97
  6. Step 6: Final answer
    x = 221,239.63

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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.