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Finding the Fourth Proportional to 392,387.79, 588,566.17 and 111,905.04

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Solution

The fourth proportional to 392,387.79, 588,566.17 and 111,905.04 is: 167,853.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,387.79 : 588,566.17 = 111,905.04 : x
  2. Step 2: Convert to fraction form
    392,387.79/588,566.17 = 111,905.04/x
  3. Step 3: Cross multiply
    392,387.79x = 588,566.17 × 111,905.04
  4. Step 4: Simplify right side
    392,387.79x = 65,863,520,796.50
  5. Step 5: Solve for x
    x = 65,863,520,796.50/392,387.79
  6. Step 6: Final answer
    x = 167,853.14

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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.