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Finding the Fourth Proportional to 203,678.52, 305,538.60 and 70,558.56

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Solution

The fourth proportional to 203,678.52, 305,538.60 and 70,558.56 is: 105,845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,678.52 : 305,538.60 = 70,558.56 : x
  2. Step 2: Convert to fraction form
    203,678.52/305,538.60 = 70,558.56/x
  3. Step 3: Cross multiply
    203,678.52x = 305,538.60 × 70,558.56
  4. Step 4: Simplify right side
    203,678.52x = 21,558,363,640.42
  5. Step 5: Solve for x
    x = 21,558,363,640.42/203,678.52
  6. Step 6: Final answer
    x = 105,845.05

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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.