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Finding the Third Proportional to 101,931 and 220,872

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Solution

The third proportional to 101,931 and 220,872 is: 478,602.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,931 : 220,872 = 220,872 : x
  2. Step 2: Convert to fraction form
    101,931/220,872 = 220,872/x
  3. Step 3: Cross multiply
    101,931x = 220,872 × 220,872
  4. Step 4: Simplify right side
    101,931x = 48,784,440,384
  5. Step 5: Solve for x
    x = 48,784,440,384/101,931
  6. Step 6: Final answer
    x = 478,602.59

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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.