Finding the Fourth Proportional to 312,563.26, 431,336.64 and 169,326.82
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Solution
The fourth proportional to 312,563.26, 431,336.64 and 169,326.82 is: 233,670.65
Step by Step Solution
- Step 1: Write the proportion equation
312,563.26 : 431,336.64 = 169,326.82 : x - Step 2: Convert to fraction form
312,563.26/431,336.64 = 169,326.82/x - Step 3: Cross multiply
312,563.26x = 431,336.64 × 169,326.82 - Step 4: Simplify right side
312,563.26x = 73,036,861,600.68 - Step 5: Solve for x
x = 73,036,861,600.68/312,563.26 - Step 6: Final answer
x = 233,670.65
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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.