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Finding the Fourth Proportional to 274,819.75, 411,620.58 and 211,171.37

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Solution

The fourth proportional to 274,819.75, 411,620.58 and 211,171.37 is: 316,289.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,819.75 : 411,620.58 = 211,171.37 : x
  2. Step 2: Convert to fraction form
    274,819.75/411,620.58 = 211,171.37/x
  3. Step 3: Cross multiply
    274,819.75x = 411,620.58 × 211,171.37
  4. Step 4: Simplify right side
    274,819.75x = 86,922,479,740.69
  5. Step 5: Solve for x
    x = 86,922,479,740.69/274,819.75
  6. Step 6: Final answer
    x = 316,289.06

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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.