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Finding the Third Proportional to 103,689 and 222,119

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Solution

The third proportional to 103,689 and 222,119 is: 475,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689 : 222,119 = 222,119 : x
  2. Step 2: Convert to fraction form
    103,689/222,119 = 222,119/x
  3. Step 3: Cross multiply
    103,689x = 222,119 × 222,119
  4. Step 4: Simplify right side
    103,689x = 49,336,850,161
  5. Step 5: Solve for x
    x = 49,336,850,161/103,689
  6. Step 6: Final answer
    x = 475,815.66

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.