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Finding the Fourth Proportional to 215,806.88, 323,709.84 and 75,605.60

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Solution

The fourth proportional to 215,806.88, 323,709.84 and 75,605.60 is: 113,408.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,806.88 : 323,709.84 = 75,605.60 : x
  2. Step 2: Convert to fraction form
    215,806.88/323,709.84 = 75,605.60/x
  3. Step 3: Cross multiply
    215,806.88x = 323,709.84 × 75,605.60
  4. Step 4: Simplify right side
    215,806.88x = 24,474,276,679.10
  5. Step 5: Solve for x
    x = 24,474,276,679.10/215,806.88
  6. Step 6: Final answer
    x = 113,408.23

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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.