Finding the Fourth Proportional to 209,115.81, 288,575.66 and 113,623.20
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Solution
The fourth proportional to 209,115.81, 288,575.66 and 113,623.20 is: 156,797.75
Step by Step Solution
- Step 1: Write the proportion equation
209,115.81 : 288,575.66 = 113,623.20 : x - Step 2: Convert to fraction form
209,115.81/288,575.66 = 113,623.20/x - Step 3: Cross multiply
209,115.81x = 288,575.66 × 113,623.20 - Step 4: Simplify right side
209,115.81x = 32,788,889,363.20 - Step 5: Solve for x
x = 32,788,889,363.20/209,115.81 - Step 6: Final answer
x = 156,797.75
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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.