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Finding the Fourth Proportional to 221,212.72, 331,302.37 and 203,350.40

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Solution

The fourth proportional to 221,212.72, 331,302.37 and 203,350.40 is: 304,550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,212.72 : 331,302.37 = 203,350.40 : x
  2. Step 2: Convert to fraction form
    221,212.72/331,302.37 = 203,350.40/x
  3. Step 3: Cross multiply
    221,212.72x = 331,302.37 × 203,350.40
  4. Step 4: Simplify right side
    221,212.72x = 67,370,469,460.45
  5. Step 5: Solve for x
    x = 67,370,469,460.45/221,212.72
  6. Step 6: Final answer
    x = 304,550.61

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1.5x scale

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.