Finding the Fourth Proportional to 263,268.91, 394,903.02 and 85,775.62
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Solution
The fourth proportional to 263,268.91, 394,903.02 and 85,775.62 is: 128,663.32
Step by Step Solution
- Step 1: Write the proportion equation
263,268.91 : 394,903.02 = 85,775.62 : x - Step 2: Convert to fraction form
263,268.91/394,903.02 = 85,775.62/x - Step 3: Cross multiply
263,268.91x = 394,903.02 × 85,775.62 - Step 4: Simplify right side
263,268.91x = 33,873,051,380.37 - Step 5: Solve for x
x = 33,873,051,380.37/263,268.91 - Step 6: Final answer
x = 128,663.32
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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.