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Finding the Fourth Proportional to 223,364.28, 308,234.25 and 127,879.86

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Solution

The fourth proportional to 223,364.28, 308,234.25 and 127,879.86 is: 176,469.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,364.28 : 308,234.25 = 127,879.86 : x
  2. Step 2: Convert to fraction form
    223,364.28/308,234.25 = 127,879.86/x
  3. Step 3: Cross multiply
    223,364.28x = 308,234.25 × 127,879.86
  4. Step 4: Simplify right side
    223,364.28x = 39,416,952,737.21
  5. Step 5: Solve for x
    x = 39,416,952,737.21/223,364.28
  6. Step 6: Final answer
    x = 176,469.37

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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.