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Finding the Fourth Proportional to 263,159.80, 394,415.70 and 178,919.80

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Solution

The fourth proportional to 263,159.80, 394,415.70 and 178,919.80 is: 268,159.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,159.80 : 394,415.70 = 178,919.80 : x
  2. Step 2: Convert to fraction form
    263,159.80/394,415.70 = 178,919.80/x
  3. Step 3: Cross multiply
    263,159.80x = 394,415.70 × 178,919.80
  4. Step 4: Simplify right side
    263,159.80x = 70,568,778,160.86
  5. Step 5: Solve for x
    x = 70,568,778,160.86/263,159.80
  6. Step 6: Final answer
    x = 268,159.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.