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Finding the Fourth Proportional to 203,704.80, 305,557.20 and 192,040.80

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Solution

The fourth proportional to 203,704.80, 305,557.20 and 192,040.80 is: 288,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,704.80 : 305,557.20 = 192,040.80 : x
  2. Step 2: Convert to fraction form
    203,704.80/305,557.20 = 192,040.80/x
  3. Step 3: Cross multiply
    203,704.80x = 305,557.20 × 192,040.80
  4. Step 4: Simplify right side
    203,704.80x = 58,679,449,133.76
  5. Step 5: Solve for x
    x = 58,679,449,133.76/203,704.80
  6. Step 6: Final answer
    x = 288,061.20

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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.