Finding the Fourth Proportional to 378,406.44, 522,198.77 and 208,640.70
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Solution
The fourth proportional to 378,406.44, 522,198.77 and 208,640.70 is: 287,923.00
Step by Step Solution
- Step 1: Write the proportion equation
378,406.44 : 522,198.77 = 208,640.70 : x - Step 2: Convert to fraction form
378,406.44/522,198.77 = 208,640.70/x - Step 3: Cross multiply
378,406.44x = 522,198.77 × 208,640.70 - Step 4: Simplify right side
378,406.44x = 108,951,915,868.74 - Step 5: Solve for x
x = 108,951,915,868.74/378,406.44 - Step 6: Final answer
x = 287,923.00
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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.