Home / 321,012,782.97-480,701,745.53-211,505,959.88

Finding the Fourth Proportional to 321,012,782.97, 480,701,745.53 and 211,505,959.88

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Solution

The fourth proportional to 321,012,782.97, 480,701,745.53 and 211,505,959.88 is: 316,720,359.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,012,782.97 : 480,701,745.53 = 211,505,959.88 : x
  2. Step 2: Convert to fraction form
    321,012,782.97/480,701,745.53 = 211,505,959.88/x
  3. Step 3: Cross multiply
    321,012,782.97x = 480,701,745.53 × 211,505,959.88
  4. Step 4: Simplify right side
    321,012,782.97x = 101,671,284,104,314,144
  5. Step 5: Solve for x
    x = 101,671,284,104,314,144/321,012,782.97
  6. Step 6: Final answer
    x = 316,720,359.74

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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.