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Finding the Fourth Proportional to 392,002.30, 588,003.55 and 111,519.55

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Solution

The fourth proportional to 392,002.30, 588,003.55 and 111,519.55 is: 167,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,002.30 : 588,003.55 = 111,519.55 : x
  2. Step 2: Convert to fraction form
    392,002.30/588,003.55 = 111,519.55/x
  3. Step 3: Cross multiply
    392,002.30x = 588,003.55 × 111,519.55
  4. Step 4: Simplify right side
    392,002.30x = 65,573,891,294.40
  5. Step 5: Solve for x
    x = 65,573,891,294.40/392,002.30
  6. Step 6: Final answer
    x = 167,279.35

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1.5x scale

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.