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Finding the Fourth Proportional to 322,481.10, 483,721.65 and 85,847.70

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Solution

The fourth proportional to 322,481.10, 483,721.65 and 85,847.70 is: 128,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,481.10 : 483,721.65 = 85,847.70 : x
  2. Step 2: Convert to fraction form
    322,481.10/483,721.65 = 85,847.70/x
  3. Step 3: Cross multiply
    322,481.10x = 483,721.65 × 85,847.70
  4. Step 4: Simplify right side
    322,481.10x = 41,526,391,092.71
  5. Step 5: Solve for x
    x = 41,526,391,092.71/322,481.10
  6. Step 6: Final answer
    x = 128,771.55

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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.