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Finding the Fourth Proportional to 361,791.76, 499,170.80 and 285,073.04

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Solution

The fourth proportional to 361,791.76, 499,170.80 and 285,073.04 is: 393,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,791.76 : 499,170.80 = 285,073.04 : x
  2. Step 2: Convert to fraction form
    361,791.76/499,170.80 = 285,073.04/x
  3. Step 3: Cross multiply
    361,791.76x = 499,170.80 × 285,073.04
  4. Step 4: Simplify right side
    361,791.76x = 142,300,137,435.23
  5. Step 5: Solve for x
    x = 142,300,137,435.23/361,791.76
  6. Step 6: Final answer
    x = 393,320.56

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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.