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Finding the Fourth Proportional to 392,472.40, 588,708.60 and 155,693.20

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Solution

The fourth proportional to 392,472.40, 588,708.60 and 155,693.20 is: 233,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,472.40 : 588,708.60 = 155,693.20 : x
  2. Step 2: Convert to fraction form
    392,472.40/588,708.60 = 155,693.20/x
  3. Step 3: Cross multiply
    392,472.40x = 588,708.60 × 155,693.20
  4. Step 4: Simplify right side
    392,472.40x = 91,657,925,801.52
  5. Step 5: Solve for x
    x = 91,657,925,801.52/392,472.40
  6. Step 6: Final answer
    x = 233,539.80

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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.