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Finding the Third Proportional to 200,980.50 and 311,058

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Solution

The third proportional to 200,980.50 and 311,058 is: 481,425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,980.50 : 311,058 = 311,058 : x
  2. Step 2: Convert to fraction form
    200,980.50/311,058 = 311,058/x
  3. Step 3: Cross multiply
    200,980.50x = 311,058 × 311,058
  4. Step 4: Simplify right side
    200,980.50x = 96,757,079,364
  5. Step 5: Solve for x
    x = 96,757,079,364/200,980.50
  6. Step 6: Final answer
    x = 481,425.21

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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.