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Finding the Third Proportional to 200,932 and 311,370

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Solution

The third proportional to 200,932 and 311,370 is: 482,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,932 : 311,370 = 311,370 : x
  2. Step 2: Convert to fraction form
    200,932/311,370 = 311,370/x
  3. Step 3: Cross multiply
    200,932x = 311,370 × 311,370
  4. Step 4: Simplify right side
    200,932x = 96,951,276,900
  5. Step 5: Solve for x
    x = 96,951,276,900/200,932
  6. Step 6: Final answer
    x = 482,507.90

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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.