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Finding the Fourth Proportional to 203,940.72, 281,324.76 and 189,507.76

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Solution

The fourth proportional to 203,940.72, 281,324.76 and 189,507.76 is: 261,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,940.72 : 281,324.76 = 189,507.76 : x
  2. Step 2: Convert to fraction form
    203,940.72/281,324.76 = 189,507.76/x
  3. Step 3: Cross multiply
    203,940.72x = 281,324.76 × 189,507.76
  4. Step 4: Simplify right side
    203,940.72x = 53,313,225,100.14
  5. Step 5: Solve for x
    x = 53,313,225,100.14/203,940.72
  6. Step 6: Final answer
    x = 261,415.30

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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.