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Finding the Third Proportional to 99,225 and 217,078

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Solution

The third proportional to 99,225 and 217,078 is: 474,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,225 : 217,078 = 217,078 : x
  2. Step 2: Convert to fraction form
    99,225/217,078 = 217,078/x
  3. Step 3: Cross multiply
    99,225x = 217,078 × 217,078
  4. Step 4: Simplify right side
    99,225x = 47,122,858,084
  5. Step 5: Solve for x
    x = 47,122,858,084/99,225
  6. Step 6: Final answer
    x = 474,909.13

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.