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Finding the Third Proportional to 121,230 and 259,956

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Solution

The third proportional to 121,230 and 259,956 is: 557,429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,230 : 259,956 = 259,956 : x
  2. Step 2: Convert to fraction form
    121,230/259,956 = 259,956/x
  3. Step 3: Cross multiply
    121,230x = 259,956 × 259,956
  4. Step 4: Simplify right side
    121,230x = 67,577,121,936
  5. Step 5: Solve for x
    x = 67,577,121,936/121,230
  6. Step 6: Final answer
    x = 557,429.04

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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.