Home / 321,116.94-442,721.25-276,276.58

Finding the Fourth Proportional to 321,116.94, 442,721.25 and 276,276.58

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Solution

The fourth proportional to 321,116.94, 442,721.25 and 276,276.58 is: 380,900.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,116.94 : 442,721.25 = 276,276.58 : x
  2. Step 2: Convert to fraction form
    321,116.94/442,721.25 = 276,276.58/x
  3. Step 3: Cross multiply
    321,116.94x = 442,721.25 × 276,276.58
  4. Step 4: Simplify right side
    321,116.94x = 122,313,511,736.52
  5. Step 5: Solve for x
    x = 122,313,511,736.52/321,116.94
  6. Step 6: Final answer
    x = 380,900.22

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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.