Finding the Fourth Proportional to 209,128.76, 288,597.12 and 113,635.80
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Solution
The fourth proportional to 209,128.76, 288,597.12 and 113,635.80 is: 156,817.09
Step by Step Solution
- Step 1: Write the proportion equation
209,128.76 : 288,597.12 = 113,635.80 : x - Step 2: Convert to fraction form
209,128.76/288,597.12 = 113,635.80/x - Step 3: Cross multiply
209,128.76x = 288,597.12 × 113,635.80 - Step 4: Simplify right side
209,128.76x = 32,794,964,608.90 - Step 5: Solve for x
x = 32,794,964,608.90/209,128.76 - Step 6: Final answer
x = 156,817.09
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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.