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Finding the Fourth Proportional to 279,592.88, 419,087.64 and 137,272.64

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Solution

The fourth proportional to 279,592.88, 419,087.64 and 137,272.64 is: 205,760.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,592.88 : 419,087.64 = 137,272.64 : x
  2. Step 2: Convert to fraction form
    279,592.88/419,087.64 = 137,272.64/x
  3. Step 3: Cross multiply
    279,592.88x = 419,087.64 × 137,272.64
  4. Step 4: Simplify right side
    279,592.88x = 57,529,268,296.66
  5. Step 5: Solve for x
    x = 57,529,268,296.66/279,592.88
  6. Step 6: Final answer
    x = 205,760.85

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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.