Finding the Fourth Proportional to 209,212.30, 288,711.18 and 113,718.70
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Solution
The fourth proportional to 209,212.30, 288,711.18 and 113,718.70 is: 156,930.83
Step by Step Solution
- Step 1: Write the proportion equation
209,212.30 : 288,711.18 = 113,718.70 : x - Step 2: Convert to fraction form
209,212.30/288,711.18 = 113,718.70/x - Step 3: Cross multiply
209,212.30x = 288,711.18 × 113,718.70 - Step 4: Simplify right side
209,212.30x = 32,831,860,065.07 - Step 5: Solve for x
x = 32,831,860,065.07/209,212.30 - Step 6: Final answer
x = 156,930.83
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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.