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Finding the Third Proportional to 252,287 and 420,461

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Solution

The third proportional to 252,287 and 420,461 is: 700,739.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,287 : 420,461 = 420,461 : x
  2. Step 2: Convert to fraction form
    252,287/420,461 = 420,461/x
  3. Step 3: Cross multiply
    252,287x = 420,461 × 420,461
  4. Step 4: Simplify right side
    252,287x = 176,787,452,521
  5. Step 5: Solve for x
    x = 176,787,452,521/252,287
  6. Step 6: Final answer
    x = 700,739.45

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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.