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Finding the Fourth Proportional to 215,530.60, 323,251.74 and 135,531.88

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Solution

The fourth proportional to 215,530.60, 323,251.74 and 135,531.88 is: 203,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,530.60 : 323,251.74 = 135,531.88 : x
  2. Step 2: Convert to fraction form
    215,530.60/323,251.74 = 135,531.88/x
  3. Step 3: Cross multiply
    215,530.60x = 323,251.74 × 135,531.88
  4. Step 4: Simplify right side
    215,530.60x = 43,810,916,035.47
  5. Step 5: Solve for x
    x = 43,810,916,035.47/215,530.60
  6. Step 6: Final answer
    x = 203,270.05

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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.