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Finding the Fourth Proportional to 203,741.25, 305,542.66 and 70,590.42

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Solution

The fourth proportional to 203,741.25, 305,542.66 and 70,590.42 is: 105,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,741.25 : 305,542.66 = 70,590.42 : x
  2. Step 2: Convert to fraction form
    203,741.25/305,542.66 = 70,590.42/x
  3. Step 3: Cross multiply
    203,741.25x = 305,542.66 × 70,590.42
  4. Step 4: Simplify right side
    203,741.25x = 21,568,384,697.32
  5. Step 5: Solve for x
    x = 21,568,384,697.32/203,741.25
  6. Step 6: Final answer
    x = 105,861.65

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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.