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Finding the Third Proportional to 205,712 and 310,755

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Solution

The third proportional to 205,712 and 310,755 is: 469,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,712 : 310,755 = 310,755 : x
  2. Step 2: Convert to fraction form
    205,712/310,755 = 310,755/x
  3. Step 3: Cross multiply
    205,712x = 310,755 × 310,755
  4. Step 4: Simplify right side
    205,712x = 96,568,670,025
  5. Step 5: Solve for x
    x = 96,568,670,025/205,712
  6. Step 6: Final answer
    x = 469,436.25

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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.