Finding the Fourth Proportional to 378,119.88, 521,816.57 and 208,364.94
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Solution
The fourth proportional to 378,119.88, 521,816.57 and 208,364.94 is: 287,549.75
Step by Step Solution
- Step 1: Write the proportion equation
378,119.88 : 521,816.57 = 208,364.94 : x - Step 2: Convert to fraction form
378,119.88/521,816.57 = 208,364.94/x - Step 3: Cross multiply
378,119.88x = 521,816.57 × 208,364.94 - Step 4: Simplify right side
378,119.88x = 108,728,278,299.06 - Step 5: Solve for x
x = 108,728,278,299.06/378,119.88 - Step 6: Final answer
x = 287,549.75
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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.