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Finding the Fourth Proportional to 481,906.72, 664,813.20 and 290,859.04

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Solution

The fourth proportional to 481,906.72, 664,813.20 and 290,859.04 is: 401,253.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,906.72 : 664,813.20 = 290,859.04 : x
  2. Step 2: Convert to fraction form
    481,906.72/664,813.20 = 290,859.04/x
  3. Step 3: Cross multiply
    481,906.72x = 664,813.20 × 290,859.04
  4. Step 4: Simplify right side
    481,906.72x = 193,366,929,131.33
  5. Step 5: Solve for x
    x = 193,366,929,131.33/481,906.72
  6. Step 6: Final answer
    x = 401,253.85

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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.