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Finding the Fourth Proportional to 392,982.52, 588,980.78 and 168,079

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Solution

The fourth proportional to 392,982.52, 588,980.78 and 168,079 is: 251,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,982.52 : 588,980.78 = 168,079 : x
  2. Step 2: Convert to fraction form
    392,982.52/588,980.78 = 168,079/x
  3. Step 3: Cross multiply
    392,982.52x = 588,980.78 × 168,079
  4. Step 4: Simplify right side
    392,982.52x = 98,995,300,521.62
  5. Step 5: Solve for x
    x = 98,995,300,521.62/392,982.52
  6. Step 6: Final answer
    x = 251,907.64

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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.