Home / 221,244,400.80-331,866,601.20-209,906,992.80

Finding the Fourth Proportional to 221,244,400.80, 331,866,601.20 and 209,906,992.80

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Solution

The fourth proportional to 221,244,400.80, 331,866,601.20 and 209,906,992.80 is: 314,860,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,244,400.80 : 331,866,601.20 = 209,906,992.80 : x
  2. Step 2: Convert to fraction form
    221,244,400.80/331,866,601.20 = 209,906,992.80/x
  3. Step 3: Cross multiply
    221,244,400.80x = 331,866,601.20 × 209,906,992.80
  4. Step 4: Simplify right side
    221,244,400.80x = 69,661,120,268,648,872
  5. Step 5: Solve for x
    x = 69,661,120,268,648,872/221,244,400.80
  6. Step 6: Final answer
    x = 314,860,489.20

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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.