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Finding the Third Proportional to 100,090.50 and 217,605

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Solution

The third proportional to 100,090.50 and 217,605 is: 473,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,090.50 : 217,605 = 217,605 : x
  2. Step 2: Convert to fraction form
    100,090.50/217,605 = 217,605/x
  3. Step 3: Cross multiply
    100,090.50x = 217,605 × 217,605
  4. Step 4: Simplify right side
    100,090.50x = 47,351,936,025
  5. Step 5: Solve for x
    x = 47,351,936,025/100,090.50
  6. Step 6: Final answer
    x = 473,091.21

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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.