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Finding the Fourth Proportional to 388,472.20, 582,781.80 and 151,799.92

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Solution

The fourth proportional to 388,472.20, 582,781.80 and 151,799.92 is: 227,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,472.20 : 582,781.80 = 151,799.92 : x
  2. Step 2: Convert to fraction form
    388,472.20/582,781.80 = 151,799.92/x
  3. Step 3: Cross multiply
    388,472.20x = 582,781.80 × 151,799.92
  4. Step 4: Simplify right side
    388,472.20x = 88,466,230,617.46
  5. Step 5: Solve for x
    x = 88,466,230,617.46/388,472.20
  6. Step 6: Final answer
    x = 227,728.60

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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.