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Finding the Fourth Proportional to 481,872, 664,997.94 and 266,991.96

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Solution

The fourth proportional to 481,872, 664,997.94 and 266,991.96 is: 368,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,872 : 664,997.94 = 266,991.96 : x
  2. Step 2: Convert to fraction form
    481,872/664,997.94 = 266,991.96/x
  3. Step 3: Cross multiply
    481,872x = 664,997.94 × 266,991.96
  4. Step 4: Simplify right side
    481,872x = 177,549,103,396.56
  5. Step 5: Solve for x
    x = 177,549,103,396.56/481,872
  6. Step 6: Final answer
    x = 368,456.98

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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.