Home / 397,449,328.80-548,479,964.88-221,233,504.80

Finding the Fourth Proportional to 397,449,328.80, 548,479,964.88 and 221,233,504.80

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Solution

The fourth proportional to 397,449,328.80, 548,479,964.88 and 221,233,504.80 is: 305,302,176.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,449,328.80 : 548,479,964.88 = 221,233,504.80 : x
  2. Step 2: Convert to fraction form
    397,449,328.80/548,479,964.88 = 221,233,504.80/x
  3. Step 3: Cross multiply
    397,449,328.80x = 548,479,964.88 × 221,233,504.80
  4. Step 4: Simplify right side
    397,449,328.80x = 121,342,144,942,983,312
  5. Step 5: Solve for x
    x = 121,342,144,942,983,312/397,449,328.80
  6. Step 6: Final answer
    x = 305,302,176.03

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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.