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Finding the Fourth Proportional to 203,472.09, 305,145.74 and 140,695.59

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Solution

The fourth proportional to 203,472.09, 305,145.74 and 140,695.59 is: 211,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,472.09 : 305,145.74 = 140,695.59 : x
  2. Step 2: Convert to fraction form
    203,472.09/305,145.74 = 140,695.59/x
  3. Step 3: Cross multiply
    203,472.09x = 305,145.74 × 140,695.59
  4. Step 4: Simplify right side
    203,472.09x = 42,932,659,221.81
  5. Step 5: Solve for x
    x = 42,932,659,221.81/203,472.09
  6. Step 6: Final answer
    x = 211,000.24

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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.