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Finding the Fourth Proportional to 203,515.64, 305,288.03 and 53,754.44

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Solution

The fourth proportional to 203,515.64, 305,288.03 and 53,754.44 is: 80,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.64 : 305,288.03 = 53,754.44 : x
  2. Step 2: Convert to fraction form
    203,515.64/305,288.03 = 53,754.44/x
  3. Step 3: Cross multiply
    203,515.64x = 305,288.03 × 53,754.44
  4. Step 4: Simplify right side
    203,515.64x = 16,410,585,699.30
  5. Step 5: Solve for x
    x = 16,410,585,699.30/203,515.64
  6. Step 6: Final answer
    x = 80,635.50

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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.