Home / 397,816,196.80-548,913,474-221,599,806.88

Finding the Fourth Proportional to 397,816,196.80, 548,913,474 and 221,599,806.88

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Solution

The fourth proportional to 397,816,196.80, 548,913,474 and 221,599,806.88 is: 305,767,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,816,196.80 : 548,913,474 = 221,599,806.88 : x
  2. Step 2: Convert to fraction form
    397,816,196.80/548,913,474 = 221,599,806.88/x
  3. Step 3: Cross multiply
    397,816,196.80x = 548,913,474 × 221,599,806.88
  4. Step 4: Simplify right side
    397,816,196.80x = 121,639,119,832,229,904
  5. Step 5: Solve for x
    x = 121,639,119,832,229,904/397,816,196.80
  6. Step 6: Final answer
    x = 305,767,137.72

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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.