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Finding the Fourth Proportional to 481,163.25, 664,180.26 and 279,959.25

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Solution

The fourth proportional to 481,163.25, 664,180.26 and 279,959.25 is: 386,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,163.25 : 664,180.26 = 279,959.25 : x
  2. Step 2: Convert to fraction form
    481,163.25/664,180.26 = 279,959.25/x
  3. Step 3: Cross multiply
    481,163.25x = 664,180.26 × 279,959.25
  4. Step 4: Simplify right side
    481,163.25x = 185,943,407,454.41
  5. Step 5: Solve for x
    x = 185,943,407,454.41/481,163.25
  6. Step 6: Final answer
    x = 386,445.57

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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.