Finding the Fourth Proportional to 378,138.16, 521,823.94 and 206,057.62
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Solution
The fourth proportional to 378,138.16, 521,823.94 and 206,057.62 is: 284,355.85
Step by Step Solution
- Step 1: Write the proportion equation
378,138.16 : 521,823.94 = 206,057.62 : x - Step 2: Convert to fraction form
378,138.16/521,823.94 = 206,057.62/x - Step 3: Cross multiply
378,138.16x = 521,823.94 × 206,057.62 - Step 4: Simplify right side
378,138.16x = 107,525,799,135.42 - Step 5: Solve for x
x = 107,525,799,135.42/378,138.16 - Step 6: Final answer
x = 284,355.85
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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.