Finding the Fourth Proportional to 209,006.20, 313,586.10 and 84,359.80
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Solution
The fourth proportional to 209,006.20, 313,586.10 and 84,359.80 is: 126,570.70
Step by Step Solution
- Step 1: Write the proportion equation
209,006.20 : 313,586.10 = 84,359.80 : x - Step 2: Convert to fraction form
209,006.20/313,586.10 = 84,359.80/x - Step 3: Cross multiply
209,006.20x = 313,586.10 × 84,359.80 - Step 4: Simplify right side
209,006.20x = 26,454,060,678.78 - Step 5: Solve for x
x = 26,454,060,678.78/209,006.20 - Step 6: Final answer
x = 126,570.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.