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Finding the Fourth Proportional to 392,374.12, 588,566.60 and 111,891.32

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Solution

The fourth proportional to 392,374.12, 588,566.60 and 111,891.32 is: 167,838.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,374.12 : 588,566.60 = 111,891.32 : x
  2. Step 2: Convert to fraction form
    392,374.12/588,566.60 = 111,891.32/x
  3. Step 3: Cross multiply
    392,374.12x = 588,566.60 × 111,891.32
  4. Step 4: Simplify right side
    392,374.12x = 65,855,493,781.91
  5. Step 5: Solve for x
    x = 65,855,493,781.91/392,374.12
  6. Step 6: Final answer
    x = 167,838.53

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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.