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Finding the Third Proportional to 100,958 and 218,636

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Solution

The third proportional to 100,958 and 218,636 is: 473,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,958 : 218,636 = 218,636 : x
  2. Step 2: Convert to fraction form
    100,958/218,636 = 218,636/x
  3. Step 3: Cross multiply
    100,958x = 218,636 × 218,636
  4. Step 4: Simplify right side
    100,958x = 47,801,700,496
  5. Step 5: Solve for x
    x = 47,801,700,496/100,958
  6. Step 6: Final answer
    x = 473,481.06

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.