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Finding the Fourth Proportional to 228,481.42, 315,304.32 and 127,879.42

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Solution

The fourth proportional to 228,481.42, 315,304.32 and 127,879.42 is: 176,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,481.42 : 315,304.32 = 127,879.42 : x
  2. Step 2: Convert to fraction form
    228,481.42/315,304.32 = 127,879.42/x
  3. Step 3: Cross multiply
    228,481.42x = 315,304.32 × 127,879.42
  4. Step 4: Simplify right side
    228,481.42x = 40,320,933,565.09
  5. Step 5: Solve for x
    x = 40,320,933,565.09/228,481.42
  6. Step 6: Final answer
    x = 176,473.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.