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Finding the Fourth Proportional to 231,625.87, 319,640.66 and 131,023.87

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Solution

The fourth proportional to 231,625.87, 319,640.66 and 131,023.87 is: 180,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,625.87 : 319,640.66 = 131,023.87 : x
  2. Step 2: Convert to fraction form
    231,625.87/319,640.66 = 131,023.87/x
  3. Step 3: Cross multiply
    231,625.87x = 319,640.66 × 131,023.87
  4. Step 4: Simplify right side
    231,625.87x = 41,880,555,627.43
  5. Step 5: Solve for x
    x = 41,880,555,627.43/231,625.87
  6. Step 6: Final answer
    x = 180,811.22

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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.