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Finding the Fourth Proportional to 215,589, 323,138.26 and 131,163.07

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Solution

The fourth proportional to 215,589, 323,138.26 and 131,163.07 is: 196,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,589 : 323,138.26 = 131,163.07 : x
  2. Step 2: Convert to fraction form
    215,589/323,138.26 = 131,163.07/x
  3. Step 3: Cross multiply
    215,589x = 323,138.26 × 131,163.07
  4. Step 4: Simplify right side
    215,589x = 42,383,806,216.06
  5. Step 5: Solve for x
    x = 42,383,806,216.06/215,589
  6. Step 6: Final answer
    x = 196,595.40

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1.5x scale

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.