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Finding the Fourth Proportional to 396,954.40, 595,431.60 and 147,584.80

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Solution

The fourth proportional to 396,954.40, 595,431.60 and 147,584.80 is: 221,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,954.40 : 595,431.60 = 147,584.80 : x
  2. Step 2: Convert to fraction form
    396,954.40/595,431.60 = 147,584.80/x
  3. Step 3: Cross multiply
    396,954.40x = 595,431.60 × 147,584.80
  4. Step 4: Simplify right side
    396,954.40x = 87,876,653,599.68
  5. Step 5: Solve for x
    x = 87,876,653,599.68/396,954.40
  6. Step 6: Final answer
    x = 221,377.20

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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.