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Finding the Third Proportional to 187,978.50 and 290,872.13

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Solution

The third proportional to 187,978.50 and 290,872.13 is: 450,086.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,978.50 : 290,872.13 = 290,872.13 : x
  2. Step 2: Convert to fraction form
    187,978.50/290,872.13 = 290,872.13/x
  3. Step 3: Cross multiply
    187,978.50x = 290,872.13 × 290,872.13
  4. Step 4: Simplify right side
    187,978.50x = 84,606,593,102.02
  5. Step 5: Solve for x
    x = 84,606,593,102.02/187,978.50
  6. Step 6: Final answer
    x = 450,086.54

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.