Home / 214,621.28-321,502.71-129,185.21

Finding the Fourth Proportional to 214,621.28, 321,502.71 and 129,185.21

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Solution

The fourth proportional to 214,621.28, 321,502.71 and 129,185.21 is: 193,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,621.28 : 321,502.71 = 129,185.21 : x
  2. Step 2: Convert to fraction form
    214,621.28/321,502.71 = 129,185.21/x
  3. Step 3: Cross multiply
    214,621.28x = 321,502.71 × 129,185.21
  4. Step 4: Simplify right side
    214,621.28x = 41,533,395,106.92
  5. Step 5: Solve for x
    x = 41,533,395,106.92/214,621.28
  6. Step 6: Final answer
    x = 193,519.46

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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.