Home / 214,630.40-321,508.20-109,508.60

Finding the Fourth Proportional to 214,630.40, 321,508.20 and 109,508.60

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Solution

The fourth proportional to 214,630.40, 321,508.20 and 109,508.60 is: 164,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,630.40 : 321,508.20 = 109,508.60 : x
  2. Step 2: Convert to fraction form
    214,630.40/321,508.20 = 109,508.60/x
  3. Step 3: Cross multiply
    214,630.40x = 321,508.20 × 109,508.60
  4. Step 4: Simplify right side
    214,630.40x = 35,207,912,870.52
  5. Step 5: Solve for x
    x = 35,207,912,870.52/214,630.40
  6. Step 6: Final answer
    x = 164,039.73

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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.