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Finding the Fourth Proportional to 203,381.46, 305,089.81 and 53,620.56

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Solution

The fourth proportional to 203,381.46, 305,089.81 and 53,620.56 is: 80,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,381.46 : 305,089.81 = 53,620.56 : x
  2. Step 2: Convert to fraction form
    203,381.46/305,089.81 = 53,620.56/x
  3. Step 3: Cross multiply
    203,381.46x = 305,089.81 × 53,620.56
  4. Step 4: Simplify right side
    203,381.46x = 16,359,086,328.44
  5. Step 5: Solve for x
    x = 16,359,086,328.44/203,381.46
  6. Step 6: Final answer
    x = 80,435.48

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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.