Home / 214,426.19-321,516.23-81,221.49

Finding the Fourth Proportional to 214,426.19, 321,516.23 and 81,221.49

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Solution

The fourth proportional to 214,426.19, 321,516.23 and 81,221.49 is: 121,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,426.19 : 321,516.23 = 81,221.49 : x
  2. Step 2: Convert to fraction form
    214,426.19/321,516.23 = 81,221.49/x
  3. Step 3: Cross multiply
    214,426.19x = 321,516.23 × 81,221.49
  4. Step 4: Simplify right side
    214,426.19x = 26,114,027,259.78
  5. Step 5: Solve for x
    x = 26,114,027,259.78/214,426.19
  6. Step 6: Final answer
    x = 121,785.62

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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.