Home / 214,129.60-321,194.40-143,627.20

Finding the Fourth Proportional to 214,129.60, 321,194.40 and 143,627.20

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Solution

The fourth proportional to 214,129.60, 321,194.40 and 143,627.20 is: 215,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,129.60 : 321,194.40 = 143,627.20 : x
  2. Step 2: Convert to fraction form
    214,129.60/321,194.40 = 143,627.20/x
  3. Step 3: Cross multiply
    214,129.60x = 321,194.40 × 143,627.20
  4. Step 4: Simplify right side
    214,129.60x = 46,132,252,327.68
  5. Step 5: Solve for x
    x = 46,132,252,327.68/214,129.60
  6. Step 6: Final answer
    x = 215,440.80

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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.