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Finding the Fourth Proportional to 199,213.60, 298,474.80 and 129,056.80

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Solution

The fourth proportional to 199,213.60, 298,474.80 and 129,056.80 is: 193,361.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,213.60 : 298,474.80 = 129,056.80 : x
  2. Step 2: Convert to fraction form
    199,213.60/298,474.80 = 129,056.80/x
  3. Step 3: Cross multiply
    199,213.60x = 298,474.80 × 129,056.80
  4. Step 4: Simplify right side
    199,213.60x = 38,520,202,568.64
  5. Step 5: Solve for x
    x = 38,520,202,568.64/199,213.60
  6. Step 6: Final answer
    x = 193,361.31

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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.