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Finding the Fourth Proportional to 396,306.54, 594,504.72 and 143,705.88

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Solution

The fourth proportional to 396,306.54, 594,504.72 and 143,705.88 is: 215,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,306.54 : 594,504.72 = 143,705.88 : x
  2. Step 2: Convert to fraction form
    396,306.54/594,504.72 = 143,705.88/x
  3. Step 3: Cross multiply
    396,306.54x = 594,504.72 × 143,705.88
  4. Step 4: Simplify right side
    396,306.54x = 85,433,823,951.75
  5. Step 5: Solve for x
    x = 85,433,823,951.75/396,306.54
  6. Step 6: Final answer
    x = 215,575.10

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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.