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Finding the Fourth Proportional to 351,969.93, 485,591.22 and 231,176.70

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Solution

The fourth proportional to 351,969.93, 485,591.22 and 231,176.70 is: 318,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,969.93 : 485,591.22 = 231,176.70 : x
  2. Step 2: Convert to fraction form
    351,969.93/485,591.22 = 231,176.70/x
  3. Step 3: Cross multiply
    351,969.93x = 485,591.22 × 231,176.70
  4. Step 4: Simplify right side
    351,969.93x = 112,257,375,788.57
  5. Step 5: Solve for x
    x = 112,257,375,788.57/351,969.93
  6. Step 6: Final answer
    x = 318,940.25

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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.