Home / 397,419,618.19-548,439,099.45-221,203,831.85

Finding the Fourth Proportional to 397,419,618.19, 548,439,099.45 and 221,203,831.85

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Solution

The fourth proportional to 397,419,618.19, 548,439,099.45 and 221,203,831.85 is: 305,261,302.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,419,618.19 : 548,439,099.45 = 221,203,831.85 : x
  2. Step 2: Convert to fraction form
    397,419,618.19/548,439,099.45 = 221,203,831.85/x
  3. Step 3: Cross multiply
    397,419,618.19x = 548,439,099.45 × 221,203,831.85
  4. Step 4: Simplify right side
    397,419,618.19x = 121,316,830,338,140,624
  5. Step 5: Solve for x
    x = 121,316,830,338,140,624/397,419,618.19
  6. Step 6: Final answer
    x = 305,261,302.63

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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.