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Finding the Fourth Proportional to 481,976.90, 665,150.56 and 267,117

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Solution

The fourth proportional to 481,976.90, 665,150.56 and 267,117 is: 368,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,976.90 : 665,150.56 = 267,117 : x
  2. Step 2: Convert to fraction form
    481,976.90/665,150.56 = 267,117/x
  3. Step 3: Cross multiply
    481,976.90x = 665,150.56 × 267,117
  4. Step 4: Simplify right side
    481,976.90x = 177,673,022,135.52
  5. Step 5: Solve for x
    x = 177,673,022,135.52/481,976.90
  6. Step 6: Final answer
    x = 368,633.90

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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.