Home / 214,426.40-321,639.60-89,856.80

Finding the Fourth Proportional to 214,426.40, 321,639.60 and 89,856.80

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Solution

The fourth proportional to 214,426.40, 321,639.60 and 89,856.80 is: 134,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,426.40 : 321,639.60 = 89,856.80 : x
  2. Step 2: Convert to fraction form
    214,426.40/321,639.60 = 89,856.80/x
  3. Step 3: Cross multiply
    214,426.40x = 321,639.60 × 89,856.80
  4. Step 4: Simplify right side
    214,426.40x = 28,901,505,209.28
  5. Step 5: Solve for x
    x = 28,901,505,209.28/214,426.40
  6. Step 6: Final answer
    x = 134,785.20

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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.