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Finding the Fourth Proportional to 392,630.40, 588,816 and 126,327.24

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Solution

The fourth proportional to 392,630.40, 588,816 and 126,327.24 is: 189,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,630.40 : 588,816 = 126,327.24 : x
  2. Step 2: Convert to fraction form
    392,630.40/588,816 = 126,327.24/x
  3. Step 3: Cross multiply
    392,630.40x = 588,816 × 126,327.24
  4. Step 4: Simplify right side
    392,630.40x = 74,383,500,147.84
  5. Step 5: Solve for x
    x = 74,383,500,147.84/392,630.40
  6. Step 6: Final answer
    x = 189,449.16

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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.