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Finding the Fourth Proportional to 396,685.26, 595,047.02 and 130,439.88

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Solution

The fourth proportional to 396,685.26, 595,047.02 and 130,439.88 is: 195,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,685.26 : 595,047.02 = 130,439.88 : x
  2. Step 2: Convert to fraction form
    396,685.26/595,047.02 = 130,439.88/x
  3. Step 3: Cross multiply
    396,685.26x = 595,047.02 × 130,439.88
  4. Step 4: Simplify right side
    396,685.26x = 77,617,861,883.16
  5. Step 5: Solve for x
    x = 77,617,861,883.16/396,685.26
  6. Step 6: Final answer
    x = 195,666.11

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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.