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Finding the Third Proportional to 252,286 and 420,460

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Solution

The third proportional to 252,286 and 420,460 is: 700,738.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,286 : 420,460 = 420,460 : x
  2. Step 2: Convert to fraction form
    252,286/420,460 = 420,460/x
  3. Step 3: Cross multiply
    252,286x = 420,460 × 420,460
  4. Step 4: Simplify right side
    252,286x = 176,786,611,600
  5. Step 5: Solve for x
    x = 176,786,611,600/252,286
  6. Step 6: Final answer
    x = 700,738.89

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.