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Finding the Third Proportional to 151,930 and 331,194

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Solution

The third proportional to 151,930 and 331,194 is: 721,973.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,930 : 331,194 = 331,194 : x
  2. Step 2: Convert to fraction form
    151,930/331,194 = 331,194/x
  3. Step 3: Cross multiply
    151,930x = 331,194 × 331,194
  4. Step 4: Simplify right side
    151,930x = 109,689,465,636
  5. Step 5: Solve for x
    x = 109,689,465,636/151,930
  6. Step 6: Final answer
    x = 721,973.71

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.