Finding the Fourth Proportional to 209,071.97, 288,519.66 and 113,578.75
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Solution
The fourth proportional to 209,071.97, 288,519.66 and 113,578.75 is: 156,738.85
Step by Step Solution
- Step 1: Write the proportion equation
209,071.97 : 288,519.66 = 113,578.75 : x - Step 2: Convert to fraction form
209,071.97/288,519.66 = 113,578.75/x - Step 3: Cross multiply
209,071.97x = 288,519.66 × 113,578.75 - Step 4: Simplify right side
209,071.97x = 32,769,700,890.63 - Step 5: Solve for x
x = 32,769,700,890.63/209,071.97 - Step 6: Final answer
x = 156,738.85
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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.