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Finding the Fourth Proportional to 392,080.85, 588,197.85 and 125,820.89

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Solution

The fourth proportional to 392,080.85, 588,197.85 and 125,820.89 is: 188,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,080.85 : 588,197.85 = 125,820.89 : x
  2. Step 2: Convert to fraction form
    392,080.85/588,197.85 = 125,820.89/x
  3. Step 3: Cross multiply
    392,080.85x = 588,197.85 × 125,820.89
  4. Step 4: Simplify right side
    392,080.85x = 74,007,574,042.10
  5. Step 5: Solve for x
    x = 74,007,574,042.10/392,080.85
  6. Step 6: Final answer
    x = 188,755.90

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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.