Finding the Fourth Proportional to 288,861,720.82, 398,629,174.74 and 165,105,055.18
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Solution
The fourth proportional to 288,861,720.82, 398,629,174.74 and 165,105,055.18 is: 227,844,976.15
Step by Step Solution
- Step 1: Write the proportion equation
288,861,720.82 : 398,629,174.74 = 165,105,055.18 : x - Step 2: Convert to fraction form
288,861,720.82/398,629,174.74 = 165,105,055.18/x - Step 3: Cross multiply
288,861,720.82x = 398,629,174.74 × 165,105,055.18 - Step 4: Simplify right side
288,861,720.82x = 65,815,691,891,805,568 - Step 5: Solve for x
x = 65,815,691,891,805,568/288,861,720.82 - Step 6: Final answer
x = 227,844,976.15
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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.