Finding the Fourth Proportional to 311,979.59, 430,531.36 and 168,739.19
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Solution
The fourth proportional to 311,979.59, 430,531.36 and 168,739.19 is: 232,859.83
Step by Step Solution
- Step 1: Write the proportion equation
311,979.59 : 430,531.36 = 168,739.19 : x - Step 2: Convert to fraction form
311,979.59/430,531.36 = 168,739.19/x - Step 3: Cross multiply
311,979.59x = 430,531.36 × 168,739.19 - Step 4: Simplify right side
311,979.59x = 72,647,512,956.00 - Step 5: Solve for x
x = 72,647,512,956.00/311,979.59 - Step 6: Final answer
x = 232,859.83
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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.