Finding the Fourth Proportional to 378,170.64, 521,886.42 and 208,415.70
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Solution
The fourth proportional to 378,170.64, 521,886.42 and 208,415.70 is: 287,619.69
Step by Step Solution
- Step 1: Write the proportion equation
378,170.64 : 521,886.42 = 208,415.70 : x - Step 2: Convert to fraction form
378,170.64/521,886.42 = 208,415.70/x - Step 3: Cross multiply
378,170.64x = 521,886.42 × 208,415.70 - Step 4: Simplify right side
378,170.64x = 108,769,323,544.79 - Step 5: Solve for x
x = 108,769,323,544.79/378,170.64 - Step 6: Final answer
x = 287,619.69
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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.