Home / 214,650.60-321,716.70-109,415.40

Finding the Fourth Proportional to 214,650.60, 321,716.70 and 109,415.40

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Solution

The fourth proportional to 214,650.60, 321,716.70 and 109,415.40 is: 163,990.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,650.60 : 321,716.70 = 109,415.40 : x
  2. Step 2: Convert to fraction form
    214,650.60/321,716.70 = 109,415.40/x
  3. Step 3: Cross multiply
    214,650.60x = 321,716.70 × 109,415.40
  4. Step 4: Simplify right side
    214,650.60x = 35,200,761,417.18
  5. Step 5: Solve for x
    x = 35,200,761,417.18/214,650.60
  6. Step 6: Final answer
    x = 163,990.98

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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.