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Finding the Fourth Proportional to 205,234.80, 308,046.60 and 126,502.80

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Solution

The fourth proportional to 205,234.80, 308,046.60 and 126,502.80 is: 189,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,234.80 : 308,046.60 = 126,502.80 : x
  2. Step 2: Convert to fraction form
    205,234.80/308,046.60 = 126,502.80/x
  3. Step 3: Cross multiply
    205,234.80x = 308,046.60 × 126,502.80
  4. Step 4: Simplify right side
    205,234.80x = 38,968,757,430.48
  5. Step 5: Solve for x
    x = 38,968,757,430.48/205,234.80
  6. Step 6: Final answer
    x = 189,874.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.