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Finding the Third Proportional to 157,874 and 338,140

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Solution

The third proportional to 157,874 and 338,140 is: 724,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,874 : 338,140 = 338,140 : x
  2. Step 2: Convert to fraction form
    157,874/338,140 = 338,140/x
  3. Step 3: Cross multiply
    157,874x = 338,140 × 338,140
  4. Step 4: Simplify right side
    157,874x = 114,338,659,600
  5. Step 5: Solve for x
    x = 114,338,659,600/157,874
  6. Step 6: Final answer
    x = 724,239.96

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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.