Finding the Fourth Proportional to 378,161.87, 521,860.73 and 208,395.99
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Solution
The fourth proportional to 378,161.87, 521,860.73 and 208,395.99 is: 287,585.01
Step by Step Solution
- Step 1: Write the proportion equation
378,161.87 : 521,860.73 = 208,395.99 : x - Step 2: Convert to fraction form
378,161.87/521,860.73 = 208,395.99/x - Step 3: Cross multiply
378,161.87x = 521,860.73 × 208,395.99 - Step 4: Simplify right side
378,161.87x = 108,753,682,428.49 - Step 5: Solve for x
x = 108,753,682,428.49/378,161.87 - Step 6: Final answer
x = 287,585.01
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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.