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Finding the Fourth Proportional to 267,007.20, 399,733.20 and 259,231.20

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Solution

The fourth proportional to 267,007.20, 399,733.20 and 259,231.20 is: 388,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,007.20 : 399,733.20 = 259,231.20 : x
  2. Step 2: Convert to fraction form
    267,007.20/399,733.20 = 259,231.20/x
  3. Step 3: Cross multiply
    267,007.20x = 399,733.20 × 259,231.20
  4. Step 4: Simplify right side
    267,007.20x = 103,623,317,115.84
  5. Step 5: Solve for x
    x = 103,623,317,115.84/267,007.20
  6. Step 6: Final answer
    x = 388,091.85

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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.