Home / 321,121.52-442,727.60-276,281.18

Finding the Fourth Proportional to 321,121.52, 442,727.60 and 276,281.18

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Solution

The fourth proportional to 321,121.52, 442,727.60 and 276,281.18 is: 380,906.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,121.52 : 442,727.60 = 276,281.18 : x
  2. Step 2: Convert to fraction form
    321,121.52/442,727.60 = 276,281.18/x
  3. Step 3: Cross multiply
    321,121.52x = 442,727.60 × 276,281.18
  4. Step 4: Simplify right side
    321,121.52x = 122,317,300,151.52
  5. Step 5: Solve for x
    x = 122,317,300,151.52/321,121.52
  6. Step 6: Final answer
    x = 380,906.59

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1.5x scale

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.