Finding the Fourth Proportional to 378,057.62, 521,719.25 and 208,291.75
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Solution
The fourth proportional to 378,057.62, 521,719.25 and 208,291.75 is: 287,442.46
Step by Step Solution
- Step 1: Write the proportion equation
378,057.62 : 521,719.25 = 208,291.75 : x - Step 2: Convert to fraction form
378,057.62/521,719.25 = 208,291.75/x - Step 3: Cross multiply
378,057.62x = 521,719.25 × 208,291.75 - Step 4: Simplify right side
378,057.62x = 108,669,813,245.43 - Step 5: Solve for x
x = 108,669,813,245.43/378,057.62 - Step 6: Final answer
x = 287,442.46
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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.