Finding the Fourth Proportional to 209,115.23, 288,578.52 and 113,622.29
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Solution
The fourth proportional to 209,115.23, 288,578.52 and 113,622.29 is: 156,798.49
Step by Step Solution
- Step 1: Write the proportion equation
209,115.23 : 288,578.52 = 113,622.29 : x - Step 2: Convert to fraction form
209,115.23/288,578.52 = 113,622.29/x - Step 3: Cross multiply
209,115.23x = 288,578.52 × 113,622.29 - Step 4: Simplify right side
209,115.23x = 32,788,952,287.21 - Step 5: Solve for x
x = 32,788,952,287.21/209,115.23 - Step 6: Final answer
x = 156,798.49
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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.