Finding the Fourth Proportional to 378,631.75, 522,518.21 and 206,549.79
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Solution
The fourth proportional to 378,631.75, 522,518.21 and 206,549.79 is: 285,042.20
Step by Step Solution
- Step 1: Write the proportion equation
378,631.75 : 522,518.21 = 206,549.79 : x - Step 2: Convert to fraction form
378,631.75/522,518.21 = 206,549.79/x - Step 3: Cross multiply
378,631.75x = 522,518.21 × 206,549.79 - Step 4: Simplify right side
378,631.75x = 107,926,026,546.68 - Step 5: Solve for x
x = 107,926,026,546.68/378,631.75 - Step 6: Final answer
x = 285,042.20
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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.