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Finding the Fourth Proportional to 486,165.85, 729,248.76 and 131,179.86

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Solution

The fourth proportional to 486,165.85, 729,248.76 and 131,179.86 is: 196,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,165.85 : 729,248.76 = 131,179.86 : x
  2. Step 2: Convert to fraction form
    486,165.85/729,248.76 = 131,179.86/x
  3. Step 3: Cross multiply
    486,165.85x = 729,248.76 × 131,179.86
  4. Step 4: Simplify right side
    486,165.85x = 95,662,749,586.07
  5. Step 5: Solve for x
    x = 95,662,749,586.07/486,165.85
  6. Step 6: Final answer
    x = 196,769.78

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Similar ratio
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1.5x scale

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.