Home / 321,647,947.66-482,675,987.72-137,416,811.78

Finding the Fourth Proportional to 321,647,947.66, 482,675,987.72 and 137,416,811.78

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Solution

The fourth proportional to 321,647,947.66, 482,675,987.72 and 137,416,811.78 is: 206,212,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,647,947.66 : 482,675,987.72 = 137,416,811.78 : x
  2. Step 2: Convert to fraction form
    321,647,947.66/482,675,987.72 = 137,416,811.78/x
  3. Step 3: Cross multiply
    321,647,947.66x = 482,675,987.72 × 137,416,811.78
  4. Step 4: Simplify right side
    321,647,947.66x = 66,327,795,355,244,832
  5. Step 5: Solve for x
    x = 66,327,795,355,244,832/321,647,947.66
  6. Step 6: Final answer
    x = 206,212,400.35

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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.