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Finding the Fourth Proportional to 481,728.48, 664,822.80 and 266,888.40

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Solution

The fourth proportional to 481,728.48, 664,822.80 and 266,888.40 is: 368,326.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,728.48 : 664,822.80 = 266,888.40 : x
  2. Step 2: Convert to fraction form
    481,728.48/664,822.80 = 266,888.40/x
  3. Step 3: Cross multiply
    481,728.48x = 664,822.80 × 266,888.40
  4. Step 4: Simplify right side
    481,728.48x = 177,433,493,375.52
  5. Step 5: Solve for x
    x = 177,433,493,375.52/481,728.48
  6. Step 6: Final answer
    x = 368,326.77

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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.