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Finding the Third Proportional to 187,405.50 and 289,866

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Solution

The third proportional to 187,405.50 and 289,866 is: 448,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,405.50 : 289,866 = 289,866 : x
  2. Step 2: Convert to fraction form
    187,405.50/289,866 = 289,866/x
  3. Step 3: Cross multiply
    187,405.50x = 289,866 × 289,866
  4. Step 4: Simplify right side
    187,405.50x = 84,022,297,956
  5. Step 5: Solve for x
    x = 84,022,297,956/187,405.50
  6. Step 6: Final answer
    x = 448,344.89

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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.