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Finding the Fourth Proportional to 481,439.88, 664,378.38 and 266,579.28

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Solution

The fourth proportional to 481,439.88, 664,378.38 and 266,579.28 is: 367,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,439.88 : 664,378.38 = 266,579.28 : x
  2. Step 2: Convert to fraction form
    481,439.88/664,378.38 = 266,579.28/x
  3. Step 3: Cross multiply
    481,439.88x = 664,378.38 × 266,579.28
  4. Step 4: Simplify right side
    481,439.88x = 177,109,510,187.97
  5. Step 5: Solve for x
    x = 177,109,510,187.97/481,439.88
  6. Step 6: Final answer
    x = 367,874.61

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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.