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Finding the Third Proportional to 144,456.75 and 311,755.50

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Solution

The third proportional to 144,456.75 and 311,755.50 is: 672,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,456.75 : 311,755.50 = 311,755.50 : x
  2. Step 2: Convert to fraction form
    144,456.75/311,755.50 = 311,755.50/x
  3. Step 3: Cross multiply
    144,456.75x = 311,755.50 × 311,755.50
  4. Step 4: Simplify right side
    144,456.75x = 97,191,491,780.25
  5. Step 5: Solve for x
    x = 97,191,491,780.25/144,456.75
  6. Step 6: Final answer
    x = 672,806.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.