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Finding the Third Proportional to 90,778.50 and 197,325

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Solution

The third proportional to 90,778.50 and 197,325 is: 428,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,778.50 : 197,325 = 197,325 : x
  2. Step 2: Convert to fraction form
    90,778.50/197,325 = 197,325/x
  3. Step 3: Cross multiply
    90,778.50x = 197,325 × 197,325
  4. Step 4: Simplify right side
    90,778.50x = 38,937,155,625
  5. Step 5: Solve for x
    x = 38,937,155,625/90,778.50
  6. Step 6: Final answer
    x = 428,924.86

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.