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Finding the Fourth Proportional to 392,449.80, 588,619.40 and 126,176.48

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Solution

The fourth proportional to 392,449.80, 588,619.40 and 126,176.48 is: 189,246.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,449.80 : 588,619.40 = 126,176.48 : x
  2. Step 2: Convert to fraction form
    392,449.80/588,619.40 = 126,176.48/x
  3. Step 3: Cross multiply
    392,449.80x = 588,619.40 × 126,176.48
  4. Step 4: Simplify right side
    392,449.80x = 74,269,923,951.71
  5. Step 5: Solve for x
    x = 74,269,923,951.71/392,449.80
  6. Step 6: Final answer
    x = 189,246.94

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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.