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Finding the Third Proportional to 100,658 and 217,708

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Solution

The third proportional to 100,658 and 217,708 is: 470,869.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,658 : 217,708 = 217,708 : x
  2. Step 2: Convert to fraction form
    100,658/217,708 = 217,708/x
  3. Step 3: Cross multiply
    100,658x = 217,708 × 217,708
  4. Step 4: Simplify right side
    100,658x = 47,396,773,264
  5. Step 5: Solve for x
    x = 47,396,773,264/100,658
  6. Step 6: Final answer
    x = 470,869.41

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.