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Finding the Third Proportional to 90,778.50 and 210,948.75

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Solution

The third proportional to 90,778.50 and 210,948.75 is: 490,197.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,778.50 : 210,948.75 = 210,948.75 : x
  2. Step 2: Convert to fraction form
    90,778.50/210,948.75 = 210,948.75/x
  3. Step 3: Cross multiply
    90,778.50x = 210,948.75 × 210,948.75
  4. Step 4: Simplify right side
    90,778.50x = 44,499,375,126.56
  5. Step 5: Solve for x
    x = 44,499,375,126.56/90,778.50
  6. Step 6: Final answer
    x = 490,197.29

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.