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Finding the Third Proportional to 143,309.25 and 311,161.50

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Solution

The third proportional to 143,309.25 and 311,161.50 is: 675,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,309.25 : 311,161.50 = 311,161.50 : x
  2. Step 2: Convert to fraction form
    143,309.25/311,161.50 = 311,161.50/x
  3. Step 3: Cross multiply
    143,309.25x = 311,161.50 × 311,161.50
  4. Step 4: Simplify right side
    143,309.25x = 96,821,479,082.25
  5. Step 5: Solve for x
    x = 96,821,479,082.25/143,309.25
  6. Step 6: Final answer
    x = 675,612.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.