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Finding the Third Proportional to 187,717.50 and 402,144.75

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Solution

The third proportional to 187,717.50 and 402,144.75 is: 861,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,717.50 : 402,144.75 = 402,144.75 : x
  2. Step 2: Convert to fraction form
    187,717.50/402,144.75 = 402,144.75/x
  3. Step 3: Cross multiply
    187,717.50x = 402,144.75 × 402,144.75
  4. Step 4: Simplify right side
    187,717.50x = 161,720,399,952.56
  5. Step 5: Solve for x
    x = 161,720,399,952.56/187,717.50
  6. Step 6: Final answer
    x = 861,509.45

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.