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Finding the Third Proportional to 155,785 and 338,908

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Solution

The third proportional to 155,785 and 338,908 is: 737,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,785 : 338,908 = 338,908 : x
  2. Step 2: Convert to fraction form
    155,785/338,908 = 338,908/x
  3. Step 3: Cross multiply
    155,785x = 338,908 × 338,908
  4. Step 4: Simplify right side
    155,785x = 114,858,632,464
  5. Step 5: Solve for x
    x = 114,858,632,464/155,785
  6. Step 6: Final answer
    x = 737,289.42

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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.