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Finding the Third Proportional to 108,918 and 231,276

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Solution

The third proportional to 108,918 and 231,276 is: 491,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,918 : 231,276 = 231,276 : x
  2. Step 2: Convert to fraction form
    108,918/231,276 = 231,276/x
  3. Step 3: Cross multiply
    108,918x = 231,276 × 231,276
  4. Step 4: Simplify right side
    108,918x = 53,488,588,176
  5. Step 5: Solve for x
    x = 53,488,588,176/108,918
  6. Step 6: Final answer
    x = 491,090.44

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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.