Home / 214,516.80-321,775.20-135,979.20

Finding the Fourth Proportional to 214,516.80, 321,775.20 and 135,979.20

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Solution

The fourth proportional to 214,516.80, 321,775.20 and 135,979.20 is: 203,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,516.80 : 321,775.20 = 135,979.20 : x
  2. Step 2: Convert to fraction form
    214,516.80/321,775.20 = 135,979.20/x
  3. Step 3: Cross multiply
    214,516.80x = 321,775.20 × 135,979.20
  4. Step 4: Simplify right side
    214,516.80x = 43,754,734,275.84
  5. Step 5: Solve for x
    x = 43,754,734,275.84/214,516.80
  6. Step 6: Final answer
    x = 203,968.80

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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.