Finding the Fourth Proportional to 258,678.93, 388,034.79 and 81,192.96
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Solution
The fourth proportional to 258,678.93, 388,034.79 and 81,192.96 is: 121,794.59
Step by Step Solution
- Step 1: Write the proportion equation
258,678.93 : 388,034.79 = 81,192.96 : x - Step 2: Convert to fraction form
258,678.93/388,034.79 = 81,192.96/x - Step 3: Cross multiply
258,678.93x = 388,034.79 × 81,192.96 - Step 4: Simplify right side
258,678.93x = 31,505,693,183.08 - Step 5: Solve for x
x = 31,505,693,183.08/258,678.93 - Step 6: Final answer
x = 121,794.59
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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.