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Finding the Fourth Proportional to 396,308.54, 594,507.72 and 143,707.88

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Solution

The fourth proportional to 396,308.54, 594,507.72 and 143,707.88 is: 215,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,308.54 : 594,507.72 = 143,707.88 : x
  2. Step 2: Convert to fraction form
    396,308.54/594,507.72 = 143,707.88/x
  3. Step 3: Cross multiply
    396,308.54x = 594,507.72 × 143,707.88
  4. Step 4: Simplify right side
    396,308.54x = 85,435,444,084.83
  5. Step 5: Solve for x
    x = 85,435,444,084.83/396,308.54
  6. Step 6: Final answer
    x = 215,578.11

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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.