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Finding the Third Proportional to 205,762 and 310,830

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Solution

The third proportional to 205,762 and 310,830 is: 469,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,762 : 310,830 = 310,830 : x
  2. Step 2: Convert to fraction form
    205,762/310,830 = 310,830/x
  3. Step 3: Cross multiply
    205,762x = 310,830 × 310,830
  4. Step 4: Simplify right side
    205,762x = 96,615,288,900
  5. Step 5: Solve for x
    x = 96,615,288,900/205,762
  6. Step 6: Final answer
    x = 469,548.75

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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.