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Finding the Fourth Proportional to 203,660.53, 305,511.58 and 70,540.54

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Solution

The fourth proportional to 203,660.53, 305,511.58 and 70,540.54 is: 105,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,660.53 : 305,511.58 = 70,540.54 : x
  2. Step 2: Convert to fraction form
    203,660.53/305,511.58 = 70,540.54/x
  3. Step 3: Cross multiply
    203,660.53x = 305,511.58 × 70,540.54
  4. Step 4: Simplify right side
    203,660.53x = 21,550,951,153.85
  5. Step 5: Solve for x
    x = 21,550,951,153.85/203,660.53
  6. Step 6: Final answer
    x = 105,818.01

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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.