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Finding the Third Proportional to 131,376 and 278,436

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Solution

The third proportional to 131,376 and 278,436 is: 590,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,376 : 278,436 = 278,436 : x
  2. Step 2: Convert to fraction form
    131,376/278,436 = 278,436/x
  3. Step 3: Cross multiply
    131,376x = 278,436 × 278,436
  4. Step 4: Simplify right side
    131,376x = 77,526,606,096
  5. Step 5: Solve for x
    x = 77,526,606,096/131,376
  6. Step 6: Final answer
    x = 590,112.40

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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.