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Finding the Third Proportional to 221,011 and 339,906

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Solution

The third proportional to 221,011 and 339,906 is: 522,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,011 : 339,906 = 339,906 : x
  2. Step 2: Convert to fraction form
    221,011/339,906 = 339,906/x
  3. Step 3: Cross multiply
    221,011x = 339,906 × 339,906
  4. Step 4: Simplify right side
    221,011x = 115,536,088,836
  5. Step 5: Solve for x
    x = 115,536,088,836/221,011
  6. Step 6: Final answer
    x = 522,761.71

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.