Finding the Fourth Proportional to 263,449.44, 394,855.92 and 128,310.98
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Solution
The fourth proportional to 263,449.44, 394,855.92 and 128,310.98 is: 192,311.47
Step by Step Solution
- Step 1: Write the proportion equation
263,449.44 : 394,855.92 = 128,310.98 : x - Step 2: Convert to fraction form
263,449.44/394,855.92 = 128,310.98/x - Step 3: Cross multiply
263,449.44x = 394,855.92 × 128,310.98 - Step 4: Simplify right side
263,449.44x = 50,664,348,079.72 - Step 5: Solve for x
x = 50,664,348,079.72/263,449.44 - Step 6: Final answer
x = 192,311.47
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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.