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Finding the Third Proportional to 120,861 and 263,228

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Solution

The third proportional to 120,861 and 263,228 is: 573,294.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,861 : 263,228 = 263,228 : x
  2. Step 2: Convert to fraction form
    120,861/263,228 = 263,228/x
  3. Step 3: Cross multiply
    120,861x = 263,228 × 263,228
  4. Step 4: Simplify right side
    120,861x = 69,288,979,984
  5. Step 5: Solve for x
    x = 69,288,979,984/120,861
  6. Step 6: Final answer
    x = 573,294.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.