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Finding the Fourth Proportional to 481,696.38, 664,732.31 and 266,835.78

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Solution

The fourth proportional to 481,696.38, 664,732.31 and 266,835.78 is: 368,228.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,696.38 : 664,732.31 = 266,835.78 : x
  2. Step 2: Convert to fraction form
    481,696.38/664,732.31 = 266,835.78/x
  3. Step 3: Cross multiply
    481,696.38x = 664,732.31 × 266,835.78
  4. Step 4: Simplify right side
    481,696.38x = 177,374,363,095.87
  5. Step 5: Solve for x
    x = 177,374,363,095.87/481,696.38
  6. Step 6: Final answer
    x = 368,228.56

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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.