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Finding the Fourth Proportional to 263,485.80, 394,353.90 and 263,485.80

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Solution

The fourth proportional to 263,485.80, 394,353.90 and 263,485.80 is: 394,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,485.80 : 394,353.90 = 263,485.80 : x
  2. Step 2: Convert to fraction form
    263,485.80/394,353.90 = 263,485.80/x
  3. Step 3: Cross multiply
    263,485.80x = 394,353.90 × 263,485.80
  4. Step 4: Simplify right side
    263,485.80x = 103,906,652,824.62
  5. Step 5: Solve for x
    x = 103,906,652,824.62/263,485.80
  6. Step 6: Final answer
    x = 394,353.90

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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.