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Finding the Third Proportional to 100,443 and 218,382

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Solution

The third proportional to 100,443 and 218,382 is: 474,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,443 : 218,382 = 218,382 : x
  2. Step 2: Convert to fraction form
    100,443/218,382 = 218,382/x
  3. Step 3: Cross multiply
    100,443x = 218,382 × 218,382
  4. Step 4: Simplify right side
    100,443x = 47,690,697,924
  5. Step 5: Solve for x
    x = 47,690,697,924/100,443
  6. Step 6: Final answer
    x = 474,803.60

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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.