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Finding the Fourth Proportional to 203,238.72, 280,227.60 and 140,991.84

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Solution

The fourth proportional to 203,238.72, 280,227.60 and 140,991.84 is: 194,400.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,238.72 : 280,227.60 = 140,991.84 : x
  2. Step 2: Convert to fraction form
    203,238.72/280,227.60 = 140,991.84/x
  3. Step 3: Cross multiply
    203,238.72x = 280,227.60 × 140,991.84
  4. Step 4: Simplify right side
    203,238.72x = 39,509,804,942.78
  5. Step 5: Solve for x
    x = 39,509,804,942.78/203,238.72
  6. Step 6: Final answer
    x = 194,400.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.