Finding the Fourth Proportional to 263,305.67, 394,883.10 and 85,828.19
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Solution
The fourth proportional to 263,305.67, 394,883.10 and 85,828.19 is: 128,717.70
Step by Step Solution
- Step 1: Write the proportion equation
263,305.67 : 394,883.10 = 85,828.19 : x - Step 2: Convert to fraction form
263,305.67/394,883.10 = 85,828.19/x - Step 3: Cross multiply
263,305.67x = 394,883.10 × 85,828.19 - Step 4: Simplify right side
263,305.67x = 33,892,099,760.17 - Step 5: Solve for x
x = 33,892,099,760.17/263,305.67 - Step 6: Final answer
x = 128,717.70
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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.