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Finding the Fourth Proportional to 264,876.80, 397,315.20 and 220,553.60

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Solution

The fourth proportional to 264,876.80, 397,315.20 and 220,553.60 is: 330,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,876.80 : 397,315.20 = 220,553.60 : x
  2. Step 2: Convert to fraction form
    264,876.80/397,315.20 = 220,553.60/x
  3. Step 3: Cross multiply
    264,876.80x = 397,315.20 × 220,553.60
  4. Step 4: Simplify right side
    264,876.80x = 87,629,297,694.72
  5. Step 5: Solve for x
    x = 87,629,297,694.72/264,876.80
  6. Step 6: Final answer
    x = 330,830.40

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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.