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Finding the Third Proportional to 269,416 and 418,344

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Solution

The third proportional to 269,416 and 418,344 is: 649,596.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,416 : 418,344 = 418,344 : x
  2. Step 2: Convert to fraction form
    269,416/418,344 = 418,344/x
  3. Step 3: Cross multiply
    269,416x = 418,344 × 418,344
  4. Step 4: Simplify right side
    269,416x = 175,011,702,336
  5. Step 5: Solve for x
    x = 175,011,702,336/269,416
  6. Step 6: Final answer
    x = 649,596.54

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.