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Finding the Third Proportional to 118,991 and 259,687

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Solution

The third proportional to 118,991 and 259,687 is: 566,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,991 : 259,687 = 259,687 : x
  2. Step 2: Convert to fraction form
    118,991/259,687 = 259,687/x
  3. Step 3: Cross multiply
    118,991x = 259,687 × 259,687
  4. Step 4: Simplify right side
    118,991x = 67,437,337,969
  5. Step 5: Solve for x
    x = 67,437,337,969/118,991
  6. Step 6: Final answer
    x = 566,743.18

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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.