Home / 221,425,321.20-332,137,981.80-205,301,007.60

Finding the Fourth Proportional to 221,425,321.20, 332,137,981.80 and 205,301,007.60

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Solution

The fourth proportional to 221,425,321.20, 332,137,981.80 and 205,301,007.60 is: 307,951,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,425,321.20 : 332,137,981.80 = 205,301,007.60 : x
  2. Step 2: Convert to fraction form
    221,425,321.20/332,137,981.80 = 205,301,007.60/x
  3. Step 3: Cross multiply
    221,425,321.20x = 332,137,981.80 × 205,301,007.60
  4. Step 4: Simplify right side
    221,425,321.20x = 68,188,262,325,770,464
  5. Step 5: Solve for x
    x = 68,188,262,325,770,464/221,425,321.20
  6. Step 6: Final answer
    x = 307,951,511.40

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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.