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Finding the Third Proportional to 187,515 and 281,292.75

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Solution

The third proportional to 187,515 and 281,292.75 is: 421,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,515 : 281,292.75 = 281,292.75 : x
  2. Step 2: Convert to fraction form
    187,515/281,292.75 = 281,292.75/x
  3. Step 3: Cross multiply
    187,515x = 281,292.75 × 281,292.75
  4. Step 4: Simplify right side
    187,515x = 79,125,611,202.56
  5. Step 5: Solve for x
    x = 79,125,611,202.56/187,515
  6. Step 6: Final answer
    x = 421,969.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.