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Finding the Third Proportional to 318,272 and 446,156

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Solution

The third proportional to 318,272 and 446,156 is: 625,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,272 : 446,156 = 446,156 : x
  2. Step 2: Convert to fraction form
    318,272/446,156 = 446,156/x
  3. Step 3: Cross multiply
    318,272x = 446,156 × 446,156
  4. Step 4: Simplify right side
    318,272x = 199,055,176,336
  5. Step 5: Solve for x
    x = 199,055,176,336/318,272
  6. Step 6: Final answer
    x = 625,424.72

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.