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Finding the Fourth Proportional to 396,683.76, 595,044.77 and 130,438.38

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Solution

The fourth proportional to 396,683.76, 595,044.77 and 130,438.38 is: 195,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,683.76 : 595,044.77 = 130,438.38 : x
  2. Step 2: Convert to fraction form
    396,683.76/595,044.77 = 130,438.38/x
  3. Step 3: Cross multiply
    396,683.76x = 595,044.77 × 130,438.38
  4. Step 4: Simplify right side
    396,683.76x = 77,616,675,826.27
  5. Step 5: Solve for x
    x = 77,616,675,826.27/396,683.76
  6. Step 6: Final answer
    x = 195,663.86

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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.