Home / 400,150,538.92-552,195,879.91-221,542,384.78

Finding the Fourth Proportional to 400,150,538.92, 552,195,879.91 and 221,542,384.78

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Solution

The fourth proportional to 400,150,538.92, 552,195,879.91 and 221,542,384.78 is: 305,721,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,150,538.92 : 552,195,879.91 = 221,542,384.78 : x
  2. Step 2: Convert to fraction form
    400,150,538.92/552,195,879.91 = 221,542,384.78/x
  3. Step 3: Cross multiply
    400,150,538.92x = 552,195,879.91 × 221,542,384.78
  4. Step 4: Simplify right side
    400,150,538.92x = 122,334,792,100,951,888
  5. Step 5: Solve for x
    x = 122,334,792,100,951,888/400,150,538.92
  6. Step 6: Final answer
    x = 305,721,922.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.