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Finding the Fourth Proportional to 392,983.52, 588,982.28 and 168,080

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Solution

The fourth proportional to 392,983.52, 588,982.28 and 168,080 is: 251,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,983.52 : 588,982.28 = 168,080 : x
  2. Step 2: Convert to fraction form
    392,983.52/588,982.28 = 168,080/x
  3. Step 3: Cross multiply
    392,983.52x = 588,982.28 × 168,080
  4. Step 4: Simplify right side
    392,983.52x = 98,996,141,622.40
  5. Step 5: Solve for x
    x = 98,996,141,622.40/392,983.52
  6. Step 6: Final answer
    x = 251,909.14

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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.