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Finding the Fourth Proportional to 392,987.92, 588,988.68 and 168,083.92

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Solution

The fourth proportional to 392,987.92, 588,988.68 and 168,083.92 is: 251,914.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,987.92 : 588,988.68 = 168,083.92 : x
  2. Step 2: Convert to fraction form
    392,987.92/588,988.68 = 168,083.92/x
  3. Step 3: Cross multiply
    392,987.92x = 588,988.68 × 168,083.92
  4. Step 4: Simplify right side
    392,987.92x = 98,999,526,170.03
  5. Step 5: Solve for x
    x = 98,999,526,170.03/392,987.92
  6. Step 6: Final answer
    x = 251,914.93

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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.