Home / 213,976.68-321,074.30-142,947.88

Finding the Fourth Proportional to 213,976.68, 321,074.30 and 142,947.88

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Solution

The fourth proportional to 213,976.68, 321,074.30 and 142,947.88 is: 214,494.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,976.68 : 321,074.30 = 142,947.88 : x
  2. Step 2: Convert to fraction form
    213,976.68/321,074.30 = 142,947.88/x
  3. Step 3: Cross multiply
    213,976.68x = 321,074.30 × 142,947.88
  4. Step 4: Simplify right side
    213,976.68x = 45,896,890,507.48
  5. Step 5: Solve for x
    x = 45,896,890,507.48/213,976.68
  6. Step 6: Final answer
    x = 214,494.82

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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.