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Finding the Third Proportional to 200,786 and 310,899

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Solution

The third proportional to 200,786 and 310,899 is: 481,399.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,786 : 310,899 = 310,899 : x
  2. Step 2: Convert to fraction form
    200,786/310,899 = 310,899/x
  3. Step 3: Cross multiply
    200,786x = 310,899 × 310,899
  4. Step 4: Simplify right side
    200,786x = 96,658,188,201
  5. Step 5: Solve for x
    x = 96,658,188,201/200,786
  6. Step 6: Final answer
    x = 481,399.04

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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.