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Finding the Third Proportional to 142,716.75 and 313,683

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Solution

The third proportional to 142,716.75 and 313,683 is: 689,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,716.75 : 313,683 = 313,683 : x
  2. Step 2: Convert to fraction form
    142,716.75/313,683 = 313,683/x
  3. Step 3: Cross multiply
    142,716.75x = 313,683 × 313,683
  4. Step 4: Simplify right side
    142,716.75x = 98,397,024,489
  5. Step 5: Solve for x
    x = 98,397,024,489/142,716.75
  6. Step 6: Final answer
    x = 689,456.74

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.