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Finding the Third Proportional to 100,399.50 and 218,295

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Solution

The third proportional to 100,399.50 and 218,295 is: 474,630.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,399.50 : 218,295 = 218,295 : x
  2. Step 2: Convert to fraction form
    100,399.50/218,295 = 218,295/x
  3. Step 3: Cross multiply
    100,399.50x = 218,295 × 218,295
  4. Step 4: Simplify right side
    100,399.50x = 47,652,707,025
  5. Step 5: Solve for x
    x = 47,652,707,025/100,399.50
  6. Step 6: Final answer
    x = 474,630.92

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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.