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Finding the Fourth Proportional to 220,841.89, 331,024.70 and 108,391.21

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Solution

The fourth proportional to 220,841.89, 331,024.70 and 108,391.21 is: 162,469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,841.89 : 331,024.70 = 108,391.21 : x
  2. Step 2: Convert to fraction form
    220,841.89/331,024.70 = 108,391.21/x
  3. Step 3: Cross multiply
    220,841.89x = 331,024.70 × 108,391.21
  4. Step 4: Simplify right side
    220,841.89x = 35,880,167,230.93
  5. Step 5: Solve for x
    x = 35,880,167,230.93/220,841.89
  6. Step 6: Final answer
    x = 162,469.93

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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.