Finding the Fourth Proportional to 378,418.77, 522,221.99 and 206,335.34
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Solution
The fourth proportional to 378,418.77, 522,221.99 and 206,335.34 is: 284,744.99
Step by Step Solution
- Step 1: Write the proportion equation
378,418.77 : 522,221.99 = 206,335.34 : x - Step 2: Convert to fraction form
378,418.77/522,221.99 = 206,335.34/x - Step 3: Cross multiply
378,418.77x = 522,221.99 × 206,335.34 - Step 4: Simplify right side
378,418.77x = 107,752,848,219.34 - Step 5: Solve for x
x = 107,752,848,219.34/378,418.77 - Step 6: Final answer
x = 284,744.99
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1.5x scale
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.