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Finding the Fourth Proportional to 221,855.06, 332,636.94 and 79,628.96

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Solution

The fourth proportional to 221,855.06, 332,636.94 and 79,628.96 is: 119,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,855.06 : 332,636.94 = 79,628.96 : x
  2. Step 2: Convert to fraction form
    221,855.06/332,636.94 = 79,628.96/x
  3. Step 3: Cross multiply
    221,855.06x = 332,636.94 × 79,628.96
  4. Step 4: Simplify right side
    221,855.06x = 26,487,533,589.78
  5. Step 5: Solve for x
    x = 26,487,533,589.78/221,855.06
  6. Step 6: Final answer
    x = 119,391.16

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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.