Finding the Fourth Proportional to 378,171,190.26, 521,876,244.21 and 204,330,934.26
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Solution
The fourth proportional to 378,171,190.26, 521,876,244.21 and 204,330,934.26 is: 281,976,690.17
Step by Step Solution
- Step 1: Write the proportion equation
378,171,190.26 : 521,876,244.21 = 204,330,934.26 : x - Step 2: Convert to fraction form
378,171,190.26/521,876,244.21 = 204,330,934.26/x - Step 3: Cross multiply
378,171,190.26x = 521,876,244.21 × 204,330,934.26 - Step 4: Simplify right side
378,171,190.26x = 106,635,460,547,529,200 - Step 5: Solve for x
x = 106,635,460,547,529,200/378,171,190.26 - Step 6: Final answer
x = 281,976,690.17
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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.