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Finding the Third Proportional to 198,839 and 301,155

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Solution

The third proportional to 198,839 and 301,155 is: 456,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,839 : 301,155 = 301,155 : x
  2. Step 2: Convert to fraction form
    198,839/301,155 = 301,155/x
  3. Step 3: Cross multiply
    198,839x = 301,155 × 301,155
  4. Step 4: Simplify right side
    198,839x = 90,694,334,025
  5. Step 5: Solve for x
    x = 90,694,334,025/198,839
  6. Step 6: Final answer
    x = 456,119.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.