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Finding the Fourth Proportional to 396,639.38, 595,032.89 and 130,410.41

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Solution

The fourth proportional to 396,639.38, 595,032.89 and 130,410.41 is: 195,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,639.38 : 595,032.89 = 130,410.41 : x
  2. Step 2: Convert to fraction form
    396,639.38/595,032.89 = 130,410.41/x
  3. Step 3: Cross multiply
    396,639.38x = 595,032.89 × 130,410.41
  4. Step 4: Simplify right side
    396,639.38x = 77,598,479,521.17
  5. Step 5: Solve for x
    x = 77,598,479,521.17/396,639.38
  6. Step 6: Final answer
    x = 195,639.88

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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.