Finding the Fourth Proportional to 231,811.26, 319,906.62 and 129,836.46
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Solution
The fourth proportional to 231,811.26, 319,906.62 and 129,836.46 is: 179,178.28
Step by Step Solution
- Step 1: Write the proportion equation
231,811.26 : 319,906.62 = 129,836.46 : x - Step 2: Convert to fraction form
231,811.26/319,906.62 = 129,836.46/x - Step 3: Cross multiply
231,811.26x = 319,906.62 × 129,836.46 - Step 4: Simplify right side
231,811.26x = 41,535,543,071.37 - Step 5: Solve for x
x = 41,535,543,071.37/231,811.26 - Step 6: Final answer
x = 179,178.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.