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Finding the Fourth Proportional to 315,872.62, 435,932.31 and 179,876.86

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Solution

The fourth proportional to 315,872.62, 435,932.31 and 179,876.86 is: 248,246.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,872.62 : 435,932.31 = 179,876.86 : x
  2. Step 2: Convert to fraction form
    315,872.62/435,932.31 = 179,876.86/x
  3. Step 3: Cross multiply
    315,872.62x = 435,932.31 × 179,876.86
  4. Step 4: Simplify right side
    315,872.62x = 78,414,135,095.35
  5. Step 5: Solve for x
    x = 78,414,135,095.35/315,872.62
  6. Step 6: Final answer
    x = 248,246.07

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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.