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Finding the Fourth Proportional to 392,389, 588,589.04 and 111,906.25

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Solution

The fourth proportional to 392,389, 588,589.04 and 111,906.25 is: 167,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,389 : 588,589.04 = 111,906.25 : x
  2. Step 2: Convert to fraction form
    392,389/588,589.04 = 111,906.25/x
  3. Step 3: Cross multiply
    392,389x = 588,589.04 × 111,906.25
  4. Step 4: Simplify right side
    392,389x = 65,866,791,697.97
  5. Step 5: Solve for x
    x = 65,866,791,697.97/392,389
  6. Step 6: Final answer
    x = 167,860.95

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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.