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Finding the Fourth Proportional to 481,391.76, 664,326 and 266,551.68

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Solution

The fourth proportional to 481,391.76, 664,326 and 266,551.68 is: 367,844.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,391.76 : 664,326 = 266,551.68 : x
  2. Step 2: Convert to fraction form
    481,391.76/664,326 = 266,551.68/x
  3. Step 3: Cross multiply
    481,391.76x = 664,326 × 266,551.68
  4. Step 4: Simplify right side
    481,391.76x = 177,077,211,367.68
  5. Step 5: Solve for x
    x = 177,077,211,367.68/481,391.76
  6. Step 6: Final answer
    x = 367,844.29

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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.