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Finding the Third Proportional to 200,972 and 311,045

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Solution

The third proportional to 200,972 and 311,045 is: 481,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,972 : 311,045 = 311,045 : x
  2. Step 2: Convert to fraction form
    200,972/311,045 = 311,045/x
  3. Step 3: Cross multiply
    200,972x = 311,045 × 311,045
  4. Step 4: Simplify right side
    200,972x = 96,748,992,025
  5. Step 5: Solve for x
    x = 96,748,992,025/200,972
  6. Step 6: Final answer
    x = 481,405.33

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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.