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Finding the Third Proportional to 213,982 and 331,341

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Solution

The third proportional to 213,982 and 331,341 is: 513,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,982 : 331,341 = 331,341 : x
  2. Step 2: Convert to fraction form
    213,982/331,341 = 331,341/x
  3. Step 3: Cross multiply
    213,982x = 331,341 × 331,341
  4. Step 4: Simplify right side
    213,982x = 109,786,858,281
  5. Step 5: Solve for x
    x = 109,786,858,281/213,982
  6. Step 6: Final answer
    x = 513,065.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.