Finding the Fourth Proportional to 386,163.20, 579,244.80 and 327,843.20
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Solution
The fourth proportional to 386,163.20, 579,244.80 and 327,843.20 is: 491,764.80
Step by Step Solution
- Step 1: Write the proportion equation
386,163.20 : 579,244.80 = 327,843.20 : x - Step 2: Convert to fraction form
386,163.20/579,244.80 = 327,843.20/x - Step 3: Cross multiply
386,163.20x = 579,244.80 × 327,843.20 - Step 4: Simplify right side
386,163.20x = 189,901,468,815.36 - Step 5: Solve for x
x = 189,901,468,815.36/386,163.20 - Step 6: Final answer
x = 491,764.80
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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.