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Finding the Fourth Proportional to 204,003.40, 305,859.30 and 91,591.60

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Solution

The fourth proportional to 204,003.40, 305,859.30 and 91,591.60 is: 137,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,003.40 : 305,859.30 = 91,591.60 : x
  2. Step 2: Convert to fraction form
    204,003.40/305,859.30 = 91,591.60/x
  3. Step 3: Cross multiply
    204,003.40x = 305,859.30 × 91,591.60
  4. Step 4: Simplify right side
    204,003.40x = 28,014,142,661.88
  5. Step 5: Solve for x
    x = 28,014,142,661.88/204,003.40
  6. Step 6: Final answer
    x = 137,321.94

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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.