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Finding the Fourth Proportional to 204,879.52, 307,360.58 and 86,550.66

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Solution

The fourth proportional to 204,879.52, 307,360.58 and 86,550.66 is: 129,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,879.52 : 307,360.58 = 86,550.66 : x
  2. Step 2: Convert to fraction form
    204,879.52/307,360.58 = 86,550.66/x
  3. Step 3: Cross multiply
    204,879.52x = 307,360.58 × 86,550.66
  4. Step 4: Simplify right side
    204,879.52x = 26,602,261,056.98
  5. Step 5: Solve for x
    x = 26,602,261,056.98/204,879.52
  6. Step 6: Final answer
    x = 129,843.44

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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.