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Finding the Fourth Proportional to 392,139.68, 588,033.48 and 111,590.24

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Solution

The fourth proportional to 392,139.68, 588,033.48 and 111,590.24 is: 167,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,139.68 : 588,033.48 = 111,590.24 : x
  2. Step 2: Convert to fraction form
    392,139.68/588,033.48 = 111,590.24/x
  3. Step 3: Cross multiply
    392,139.68x = 588,033.48 × 111,590.24
  4. Step 4: Simplify right side
    392,139.68x = 65,618,797,161.24
  5. Step 5: Solve for x
    x = 65,618,797,161.24/392,139.68
  6. Step 6: Final answer
    x = 167,335.26

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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.