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Finding the Fourth Proportional to 203,350.60, 305,074.20 and 70,231.96

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Solution

The fourth proportional to 203,350.60, 305,074.20 and 70,231.96 is: 105,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,350.60 : 305,074.20 = 70,231.96 : x
  2. Step 2: Convert to fraction form
    203,350.60/305,074.20 = 70,231.96/x
  3. Step 3: Cross multiply
    203,350.60x = 305,074.20 × 70,231.96
  4. Step 4: Simplify right side
    203,350.60x = 21,425,959,011.43
  5. Step 5: Solve for x
    x = 21,425,959,011.43/203,350.60
  6. Step 6: Final answer
    x = 105,364.62

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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.