Home / 397,419,619.19-548,439,100.83-221,203,832.85

Finding the Fourth Proportional to 397,419,619.19, 548,439,100.83 and 221,203,832.85

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Solution

The fourth proportional to 397,419,619.19, 548,439,100.83 and 221,203,832.85 is: 305,261,304.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,419,619.19 : 548,439,100.83 = 221,203,832.85 : x
  2. Step 2: Convert to fraction form
    397,419,619.19/548,439,100.83 = 221,203,832.85/x
  3. Step 3: Cross multiply
    397,419,619.19x = 548,439,100.83 × 221,203,832.85
  4. Step 4: Simplify right side
    397,419,619.19x = 121,316,831,188,403,616
  5. Step 5: Solve for x
    x = 121,316,831,188,403,616/397,419,619.19
  6. Step 6: Final answer
    x = 305,261,304.00

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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.