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Finding the Third Proportional to 204,785 and 310,040

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Solution

The third proportional to 204,785 and 310,040 is: 469,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,785 : 310,040 = 310,040 : x
  2. Step 2: Convert to fraction form
    204,785/310,040 = 310,040/x
  3. Step 3: Cross multiply
    204,785x = 310,040 × 310,040
  4. Step 4: Simplify right side
    204,785x = 96,124,801,600
  5. Step 5: Solve for x
    x = 96,124,801,600/204,785
  6. Step 6: Final answer
    x = 469,393.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.