Finding the Fourth Proportional to 306,608.49, 422,757.63 and 209,859.05
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Solution
The fourth proportional to 306,608.49, 422,757.63 and 209,859.05 is: 289,357.66
Step by Step Solution
- Step 1: Write the proportion equation
306,608.49 : 422,757.63 = 209,859.05 : x - Step 2: Convert to fraction form
306,608.49/422,757.63 = 209,859.05/x - Step 3: Cross multiply
306,608.49x = 422,757.63 × 209,859.05 - Step 4: Simplify right side
306,608.49x = 88,719,515,668.95 - Step 5: Solve for x
x = 88,719,515,668.95/306,608.49 - Step 6: Final answer
x = 289,357.66
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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.