Finding the Fourth Proportional to 397,716.75, 548,849.21 and 218,868.75
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Solution
The fourth proportional to 397,716.75, 548,849.21 and 218,868.75 is: 302,038.93
Step by Step Solution
- Step 1: Write the proportion equation
397,716.75 : 548,849.21 = 218,868.75 : x - Step 2: Convert to fraction form
397,716.75/548,849.21 = 218,868.75/x - Step 3: Cross multiply
397,716.75x = 548,849.21 × 218,868.75 - Step 4: Simplify right side
397,716.75x = 120,125,940,531.19 - Step 5: Solve for x
x = 120,125,940,531.19/397,716.75 - Step 6: Final answer
x = 302,038.93
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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.