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Finding the Fourth Proportional to 392,344.45, 588,522.15 and 111,861.70

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Solution

The fourth proportional to 392,344.45, 588,522.15 and 111,861.70 is: 167,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,344.45 : 588,522.15 = 111,861.70 : x
  2. Step 2: Convert to fraction form
    392,344.45/588,522.15 = 111,861.70/x
  3. Step 3: Cross multiply
    392,344.45x = 588,522.15 × 111,861.70
  4. Step 4: Simplify right side
    392,344.45x = 65,833,090,025.79
  5. Step 5: Solve for x
    x = 65,833,090,025.79/392,344.45
  6. Step 6: Final answer
    x = 167,794.11

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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.