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Finding the Third Proportional to 155,781 and 338,899

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Solution

The third proportional to 155,781 and 338,899 is: 737,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,781 : 338,899 = 338,899 : x
  2. Step 2: Convert to fraction form
    155,781/338,899 = 338,899/x
  3. Step 3: Cross multiply
    155,781x = 338,899 × 338,899
  4. Step 4: Simplify right side
    155,781x = 114,852,532,201
  5. Step 5: Solve for x
    x = 114,852,532,201/155,781
  6. Step 6: Final answer
    x = 737,269.19

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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.