Finding the Fourth Proportional to 209,213.74, 288,708.87 and 113,717.98
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Solution
The fourth proportional to 209,213.74, 288,708.87 and 113,717.98 is: 156,927.50
Step by Step Solution
- Step 1: Write the proportion equation
209,213.74 : 288,708.87 = 113,717.98 : x - Step 2: Convert to fraction form
209,213.74/288,708.87 = 113,717.98/x - Step 3: Cross multiply
209,213.74x = 288,708.87 × 113,717.98 - Step 4: Simplify right side
209,213.74x = 32,831,389,504.48 - Step 5: Solve for x
x = 32,831,389,504.48/209,213.74 - Step 6: Final answer
x = 156,927.50
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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.