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Finding the Third Proportional to 120,476 and 259,276

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Solution

The third proportional to 120,476 and 259,276 is: 557,987.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,476 : 259,276 = 259,276 : x
  2. Step 2: Convert to fraction form
    120,476/259,276 = 259,276/x
  3. Step 3: Cross multiply
    120,476x = 259,276 × 259,276
  4. Step 4: Simplify right side
    120,476x = 67,224,044,176
  5. Step 5: Solve for x
    x = 67,224,044,176/120,476
  6. Step 6: Final answer
    x = 557,987.02

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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.