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Finding the Fourth Proportional to 664,100.80, 996,021.60 and 220,868.80

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Solution

The fourth proportional to 664,100.80, 996,021.60 and 220,868.80 is: 331,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,100.80 : 996,021.60 = 220,868.80 : x
  2. Step 2: Convert to fraction form
    664,100.80/996,021.60 = 220,868.80/x
  3. Step 3: Cross multiply
    664,100.80x = 996,021.60 × 220,868.80
  4. Step 4: Simplify right side
    664,100.80x = 219,990,095,566.08
  5. Step 5: Solve for x
    x = 219,990,095,566.08/664,100.80
  6. Step 6: Final answer
    x = 331,260.10

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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.