Finding the Fourth Proportional to 209,133.45, 288,605.99 and 113,640.15
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Solution
The fourth proportional to 209,133.45, 288,605.99 and 113,640.15 is: 156,824.40
Step by Step Solution
- Step 1: Write the proportion equation
209,133.45 : 288,605.99 = 113,640.15 : x - Step 2: Convert to fraction form
209,133.45/288,605.99 = 113,640.15/x - Step 3: Cross multiply
209,133.45x = 288,605.99 × 113,640.15 - Step 4: Simplify right side
209,133.45x = 32,797,227,426.30 - Step 5: Solve for x
x = 32,797,227,426.30/209,133.45 - Step 6: Final answer
x = 156,824.40
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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.