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Finding the Third Proportional to 203,195 and 316,427

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Solution

The third proportional to 203,195 and 316,427 is: 492,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,195 : 316,427 = 316,427 : x
  2. Step 2: Convert to fraction form
    203,195/316,427 = 316,427/x
  3. Step 3: Cross multiply
    203,195x = 316,427 × 316,427
  4. Step 4: Simplify right side
    203,195x = 100,126,046,329
  5. Step 5: Solve for x
    x = 100,126,046,329/203,195
  6. Step 6: Final answer
    x = 492,758.42

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.