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Finding the Third Proportional to 200,853 and 310,995

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Solution

The third proportional to 200,853 and 310,995 is: 481,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,853 : 310,995 = 310,995 : x
  2. Step 2: Convert to fraction form
    200,853/310,995 = 310,995/x
  3. Step 3: Cross multiply
    200,853x = 310,995 × 310,995
  4. Step 4: Simplify right side
    200,853x = 96,717,890,025
  5. Step 5: Solve for x
    x = 96,717,890,025/200,853
  6. Step 6: Final answer
    x = 481,535.70

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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.