Home / 214,431.40-321,647.10-89,861.80

Finding the Fourth Proportional to 214,431.40, 321,647.10 and 89,861.80

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Solution

The fourth proportional to 214,431.40, 321,647.10 and 89,861.80 is: 134,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,431.40 : 321,647.10 = 89,861.80 : x
  2. Step 2: Convert to fraction form
    214,431.40/321,647.10 = 89,861.80/x
  3. Step 3: Cross multiply
    214,431.40x = 321,647.10 × 89,861.80
  4. Step 4: Simplify right side
    214,431.40x = 28,903,787,370.78
  5. Step 5: Solve for x
    x = 28,903,787,370.78/214,431.40
  6. Step 6: Final answer
    x = 134,792.70

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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.