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Finding the Third Proportional to 217,159 and 313,281

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Solution

The third proportional to 217,159 and 313,281 is: 451,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,159 : 313,281 = 313,281 : x
  2. Step 2: Convert to fraction form
    217,159/313,281 = 313,281/x
  3. Step 3: Cross multiply
    217,159x = 313,281 × 313,281
  4. Step 4: Simplify right side
    217,159x = 98,144,984,961
  5. Step 5: Solve for x
    x = 98,144,984,961/217,159
  6. Step 6: Final answer
    x = 451,949.88

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.