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Finding the Fourth Proportional to 321,884.01, 482,771.31 and 85,250.61

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Solution

The fourth proportional to 321,884.01, 482,771.31 and 85,250.61 is: 127,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,884.01 : 482,771.31 = 85,250.61 : x
  2. Step 2: Convert to fraction form
    321,884.01/482,771.31 = 85,250.61/x
  3. Step 3: Cross multiply
    321,884.01x = 482,771.31 × 85,250.61
  4. Step 4: Simplify right side
    321,884.01x = 41,156,548,668.00
  5. Step 5: Solve for x
    x = 41,156,548,668.00/321,884.01
  6. Step 6: Final answer
    x = 127,861.43

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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.