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Finding the Fourth Proportional to 396,760.45, 595,163.18 and 126,912.29

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Solution

The fourth proportional to 396,760.45, 595,163.18 and 126,912.29 is: 190,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,760.45 : 595,163.18 = 126,912.29 : x
  2. Step 2: Convert to fraction form
    396,760.45/595,163.18 = 126,912.29/x
  3. Step 3: Cross multiply
    396,760.45x = 595,163.18 × 126,912.29
  4. Step 4: Simplify right side
    396,760.45x = 75,533,522,097.48
  5. Step 5: Solve for x
    x = 75,533,522,097.48/396,760.45
  6. Step 6: Final answer
    x = 190,375.63

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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.