Home / 214,625.60-321,679.20-109,390.40

Finding the Fourth Proportional to 214,625.60, 321,679.20 and 109,390.40

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Solution

The fourth proportional to 214,625.60, 321,679.20 and 109,390.40 is: 163,953.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,625.60 : 321,679.20 = 109,390.40 : x
  2. Step 2: Convert to fraction form
    214,625.60/321,679.20 = 109,390.40/x
  3. Step 3: Cross multiply
    214,625.60x = 321,679.20 × 109,390.40
  4. Step 4: Simplify right side
    214,625.60x = 35,188,616,359.68
  5. Step 5: Solve for x
    x = 35,188,616,359.68/214,625.60
  6. Step 6: Final answer
    x = 163,953.49

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1.5x scale

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.