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Finding the Fourth Proportional to 392,659.13, 588,914.13 and 108,279.38

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Solution

The fourth proportional to 392,659.13, 588,914.13 and 108,279.38 is: 162,398.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,659.13 : 588,914.13 = 108,279.38 : x
  2. Step 2: Convert to fraction form
    392,659.13/588,914.13 = 108,279.38/x
  3. Step 3: Cross multiply
    392,659.13x = 588,914.13 × 108,279.38
  4. Step 4: Simplify right side
    392,659.13x = 63,767,256,869.64
  5. Step 5: Solve for x
    x = 63,767,256,869.64/392,659.13
  6. Step 6: Final answer
    x = 162,398.51

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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.