Home / 279,198,121.20-418,797,181.80-255,011,650.80

Finding the Fourth Proportional to 279,198,121.20, 418,797,181.80 and 255,011,650.80

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Solution

The fourth proportional to 279,198,121.20, 418,797,181.80 and 255,011,650.80 is: 382,517,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,198,121.20 : 418,797,181.80 = 255,011,650.80 : x
  2. Step 2: Convert to fraction form
    279,198,121.20/418,797,181.80 = 255,011,650.80/x
  3. Step 3: Cross multiply
    279,198,121.20x = 418,797,181.80 × 255,011,650.80
  4. Step 4: Simplify right side
    279,198,121.20x = 106,798,160,681,205,728
  5. Step 5: Solve for x
    x = 106,798,160,681,205,728/279,198,121.20
  6. Step 6: Final answer
    x = 382,517,476.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.