Finding the Fourth Proportional to 311,687.94, 430,129.48 and 177,551.94
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Solution
The fourth proportional to 311,687.94, 430,129.48 and 177,551.94 is: 245,021.75
Step by Step Solution
- Step 1: Write the proportion equation
311,687.94 : 430,129.48 = 177,551.94 : x - Step 2: Convert to fraction form
311,687.94/430,129.48 = 177,551.94/x - Step 3: Cross multiply
311,687.94x = 430,129.48 × 177,551.94 - Step 4: Simplify right side
311,687.94x = 76,370,323,625.19 - Step 5: Solve for x
x = 76,370,323,625.19/311,687.94 - Step 6: Final answer
x = 245,021.75
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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.