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Finding the Fourth Proportional to 481,698.38, 664,735.05 and 266,837.78

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Solution

The fourth proportional to 481,698.38, 664,735.05 and 266,837.78 is: 368,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,698.38 : 664,735.05 = 266,837.78 : x
  2. Step 2: Convert to fraction form
    481,698.38/664,735.05 = 266,837.78/x
  3. Step 3: Cross multiply
    481,698.38x = 664,735.05 × 266,837.78
  4. Step 4: Simplify right side
    481,698.38x = 177,376,425,030.19
  5. Step 5: Solve for x
    x = 177,376,425,030.19/481,698.38
  6. Step 6: Final answer
    x = 368,231.31

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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.