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Finding the Third Proportional to 180,020.50 and 393,945

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Solution

The third proportional to 180,020.50 and 393,945 is: 862,083.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,020.50 : 393,945 = 393,945 : x
  2. Step 2: Convert to fraction form
    180,020.50/393,945 = 393,945/x
  3. Step 3: Cross multiply
    180,020.50x = 393,945 × 393,945
  4. Step 4: Simplify right side
    180,020.50x = 155,192,663,025
  5. Step 5: Solve for x
    x = 155,192,663,025/180,020.50
  6. Step 6: Final answer
    x = 862,083.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.