Finding the Fourth Proportional to 378,393.20, 522,186.68 and 206,309.75
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Solution
The fourth proportional to 378,393.20, 522,186.68 and 206,309.75 is: 284,709.68
Step by Step Solution
- Step 1: Write the proportion equation
378,393.20 : 522,186.68 = 206,309.75 : x - Step 2: Convert to fraction form
378,393.20/522,186.68 = 206,309.75/x - Step 3: Cross multiply
378,393.20x = 522,186.68 × 206,309.75 - Step 4: Simplify right side
378,393.20x = 107,732,204,246.27 - Step 5: Solve for x
x = 107,732,204,246.27/378,393.20 - Step 6: Final answer
x = 284,709.68
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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.