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Finding the Third Proportional to 121,538 and 262,516

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Solution

The third proportional to 121,538 and 262,516 is: 567,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,538 : 262,516 = 262,516 : x
  2. Step 2: Convert to fraction form
    121,538/262,516 = 262,516/x
  3. Step 3: Cross multiply
    121,538x = 262,516 × 262,516
  4. Step 4: Simplify right side
    121,538x = 68,914,650,256
  5. Step 5: Solve for x
    x = 68,914,650,256/121,538
  6. Step 6: Final answer
    x = 567,021.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.