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Finding the Fourth Proportional to 221,231.60, 331,451.40 and 134,519.60

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Solution

The fourth proportional to 221,231.60, 331,451.40 and 134,519.60 is: 201,538.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,231.60 : 331,451.40 = 134,519.60 : x
  2. Step 2: Convert to fraction form
    221,231.60/331,451.40 = 134,519.60/x
  3. Step 3: Cross multiply
    221,231.60x = 331,451.40 × 134,519.60
  4. Step 4: Simplify right side
    221,231.60x = 44,586,709,747.44
  5. Step 5: Solve for x
    x = 44,586,709,747.44/221,231.60
  6. Step 6: Final answer
    x = 201,538.61

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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.