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Finding the Third Proportional to 121,652 and 261,416

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Solution

The third proportional to 121,652 and 261,416 is: 561,752.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,652 : 261,416 = 261,416 : x
  2. Step 2: Convert to fraction form
    121,652/261,416 = 261,416/x
  3. Step 3: Cross multiply
    121,652x = 261,416 × 261,416
  4. Step 4: Simplify right side
    121,652x = 68,338,325,056
  5. Step 5: Solve for x
    x = 68,338,325,056/121,652
  6. Step 6: Final answer
    x = 561,752.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.