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Finding the Fourth Proportional to 396,318.30, 594,477.45 and 130,119.90

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Solution

The fourth proportional to 396,318.30, 594,477.45 and 130,119.90 is: 195,179.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,318.30 : 594,477.45 = 130,119.90 : x
  2. Step 2: Convert to fraction form
    396,318.30/594,477.45 = 130,119.90/x
  3. Step 3: Cross multiply
    396,318.30x = 594,477.45 × 130,119.90
  4. Step 4: Simplify right side
    396,318.30x = 77,353,346,346.26
  5. Step 5: Solve for x
    x = 77,353,346,346.26/396,318.30
  6. Step 6: Final answer
    x = 195,179.85

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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.