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Finding the Fourth Proportional to 339,879.75, 469,034.06 and 188,976.75

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Solution

The fourth proportional to 339,879.75, 469,034.06 and 188,976.75 is: 260,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,879.75 : 469,034.06 = 188,976.75 : x
  2. Step 2: Convert to fraction form
    339,879.75/469,034.06 = 188,976.75/x
  3. Step 3: Cross multiply
    339,879.75x = 469,034.06 × 188,976.75
  4. Step 4: Simplify right side
    339,879.75x = 88,636,531,353.22
  5. Step 5: Solve for x
    x = 88,636,531,353.22/339,879.75
  6. Step 6: Final answer
    x = 260,787.92

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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.