Finding the Fourth Proportional to 209,685.65, 289,378.35 and 157,910.03
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Solution
The fourth proportional to 209,685.65, 289,378.35 and 157,910.03 is: 217,924.99
Step by Step Solution
- Step 1: Write the proportion equation
209,685.65 : 289,378.35 = 157,910.03 : x - Step 2: Convert to fraction form
209,685.65/289,378.35 = 157,910.03/x - Step 3: Cross multiply
209,685.65x = 289,378.35 × 157,910.03 - Step 4: Simplify right side
209,685.65x = 45,695,743,929.85 - Step 5: Solve for x
x = 45,695,743,929.85/209,685.65 - Step 6: Final answer
x = 217,924.99
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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.