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Finding the Fourth Proportional to 396,720.78, 595,081.20 and 101,232.78

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Solution

The fourth proportional to 396,720.78, 595,081.20 and 101,232.78 is: 151,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,720.78 : 595,081.20 = 101,232.78 : x
  2. Step 2: Convert to fraction form
    396,720.78/595,081.20 = 101,232.78/x
  3. Step 3: Cross multiply
    396,720.78x = 595,081.20 × 101,232.78
  4. Step 4: Simplify right side
    396,720.78x = 60,241,724,201.74
  5. Step 5: Solve for x
    x = 60,241,724,201.74/396,720.78
  6. Step 6: Final answer
    x = 151,849.18

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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.