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Finding the Third Proportional to 100,579 and 209,425

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Solution

The third proportional to 100,579 and 209,425 is: 436,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,579 : 209,425 = 209,425 : x
  2. Step 2: Convert to fraction form
    100,579/209,425 = 209,425/x
  3. Step 3: Cross multiply
    100,579x = 209,425 × 209,425
  4. Step 4: Simplify right side
    100,579x = 43,858,830,625
  5. Step 5: Solve for x
    x = 43,858,830,625/100,579
  6. Step 6: Final answer
    x = 436,063.50

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.