Finding the Fourth Proportional to 209,195.10, 288,690.99 and 113,701.77
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Solution
The fourth proportional to 209,195.10, 288,690.99 and 113,701.77 is: 156,909.39
Step by Step Solution
- Step 1: Write the proportion equation
209,195.10 : 288,690.99 = 113,701.77 : x - Step 2: Convert to fraction form
209,195.10/288,690.99 = 113,701.77/x - Step 3: Cross multiply
209,195.10x = 288,690.99 × 113,701.77 - Step 4: Simplify right side
209,195.10x = 32,824,676,546.05 - Step 5: Solve for x
x = 32,824,676,546.05/209,195.10 - Step 6: Final answer
x = 156,909.39
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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.