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Finding the Fourth Proportional to 392,984.52, 588,983.78 and 168,081

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Solution

The fourth proportional to 392,984.52, 588,983.78 and 168,081 is: 251,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,984.52 : 588,983.78 = 168,081 : x
  2. Step 2: Convert to fraction form
    392,984.52/588,983.78 = 168,081/x
  3. Step 3: Cross multiply
    392,984.52x = 588,983.78 × 168,081
  4. Step 4: Simplify right side
    392,984.52x = 98,996,982,726.18
  5. Step 5: Solve for x
    x = 98,996,982,726.18/392,984.52
  6. Step 6: Final answer
    x = 251,910.64

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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.