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Finding the Third Proportional to 100,496 and 212,908

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Solution

The third proportional to 100,496 and 212,908 is: 451,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,496 : 212,908 = 212,908 : x
  2. Step 2: Convert to fraction form
    100,496/212,908 = 212,908/x
  3. Step 3: Cross multiply
    100,496x = 212,908 × 212,908
  4. Step 4: Simplify right side
    100,496x = 45,329,816,464
  5. Step 5: Solve for x
    x = 45,329,816,464/100,496
  6. Step 6: Final answer
    x = 451,060.90

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.