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Finding the Third Proportional to 64,482 and 138,486

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Solution

The third proportional to 64,482 and 138,486 is: 297,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,482 : 138,486 = 138,486 : x
  2. Step 2: Convert to fraction form
    64,482/138,486 = 138,486/x
  3. Step 3: Cross multiply
    64,482x = 138,486 × 138,486
  4. Step 4: Simplify right side
    64,482x = 19,178,372,196
  5. Step 5: Solve for x
    x = 19,178,372,196/64,482
  6. Step 6: Final answer
    x = 297,422.11

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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.