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Finding the Fourth Proportional to 218,853.82, 328,315.86 and 92,495.32

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Solution

The fourth proportional to 218,853.82, 328,315.86 and 92,495.32 is: 138,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,853.82 : 328,315.86 = 92,495.32 : x
  2. Step 2: Convert to fraction form
    218,853.82/328,315.86 = 92,495.32/x
  3. Step 3: Cross multiply
    218,853.82x = 328,315.86 × 92,495.32
  4. Step 4: Simplify right side
    218,853.82x = 30,367,680,531.78
  5. Step 5: Solve for x
    x = 30,367,680,531.78/218,853.82
  6. Step 6: Final answer
    x = 138,757.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.