Finding the Fourth Proportional to 209,115.72, 288,579.02 and 113,622.80
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Solution
The fourth proportional to 209,115.72, 288,579.02 and 113,622.80 is: 156,799.09
Step by Step Solution
- Step 1: Write the proportion equation
209,115.72 : 288,579.02 = 113,622.80 : x - Step 2: Convert to fraction form
209,115.72/288,579.02 = 113,622.80/x - Step 3: Cross multiply
209,115.72x = 288,579.02 × 113,622.80 - Step 4: Simplify right side
209,115.72x = 32,789,154,262.65 - Step 5: Solve for x
x = 32,789,154,262.65/209,115.72 - Step 6: Final answer
x = 156,799.09
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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.