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Finding the Fourth Proportional to 481,679.75, 664,709.73 and 266,815.31

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Solution

The fourth proportional to 481,679.75, 664,709.73 and 266,815.31 is: 368,200.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,679.75 : 664,709.73 = 266,815.31 : x
  2. Step 2: Convert to fraction form
    481,679.75/664,709.73 = 266,815.31/x
  3. Step 3: Cross multiply
    481,679.75x = 664,709.73 × 266,815.31
  4. Step 4: Simplify right side
    481,679.75x = 177,354,729,346.42
  5. Step 5: Solve for x
    x = 177,354,729,346.42/481,679.75
  6. Step 6: Final answer
    x = 368,200.51

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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.