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Finding the Third Proportional to 122,418 and 259,308

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Solution

The third proportional to 122,418 and 259,308 is: 549,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,418 : 259,308 = 259,308 : x
  2. Step 2: Convert to fraction form
    122,418/259,308 = 259,308/x
  3. Step 3: Cross multiply
    122,418x = 259,308 × 259,308
  4. Step 4: Simplify right side
    122,418x = 67,240,638,864
  5. Step 5: Solve for x
    x = 67,240,638,864/122,418
  6. Step 6: Final answer
    x = 549,270.85

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.