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Finding the Fourth Proportional to 219,879.75, 303,458.36 and 124,385.61

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Solution

The fourth proportional to 219,879.75, 303,458.36 and 124,385.61 is: 171,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,879.75 : 303,458.36 = 124,385.61 : x
  2. Step 2: Convert to fraction form
    219,879.75/303,458.36 = 124,385.61/x
  3. Step 3: Cross multiply
    219,879.75x = 303,458.36 × 124,385.61
  4. Step 4: Simplify right side
    219,879.75x = 37,745,852,596.27
  5. Step 5: Solve for x
    x = 37,745,852,596.27/219,879.75
  6. Step 6: Final answer
    x = 171,665.89

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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.