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Finding the Fourth Proportional to 243,217.89, 364,846.28 and 85,481.73

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Solution

The fourth proportional to 243,217.89, 364,846.28 and 85,481.73 is: 128,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,217.89 : 364,846.28 = 85,481.73 : x
  2. Step 2: Convert to fraction form
    243,217.89/364,846.28 = 85,481.73/x
  3. Step 3: Cross multiply
    243,217.89x = 364,846.28 × 85,481.73
  4. Step 4: Simplify right side
    243,217.89x = 31,187,690,771.06
  5. Step 5: Solve for x
    x = 31,187,690,771.06/243,217.89
  6. Step 6: Final answer
    x = 128,229.43

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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.