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Finding the Fourth Proportional to 199,311.60, 298,818.60 and 120,409.20

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Solution

The fourth proportional to 199,311.60, 298,818.60 and 120,409.20 is: 180,523.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,311.60 : 298,818.60 = 120,409.20 : x
  2. Step 2: Convert to fraction form
    199,311.60/298,818.60 = 120,409.20/x
  3. Step 3: Cross multiply
    199,311.60x = 298,818.60 × 120,409.20
  4. Step 4: Simplify right side
    199,311.60x = 35,980,508,571.12
  5. Step 5: Solve for x
    x = 35,980,508,571.12/199,311.60
  6. Step 6: Final answer
    x = 180,523.91

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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.