Finding the Fourth Proportional to 207,821.97, 311,721.75 and 81,484.92
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Solution
The fourth proportional to 207,821.97, 311,721.75 and 81,484.92 is: 122,222.99
Step by Step Solution
- Step 1: Write the proportion equation
207,821.97 : 311,721.75 = 81,484.92 : x - Step 2: Convert to fraction form
207,821.97/311,721.75 = 81,484.92/x - Step 3: Cross multiply
207,821.97x = 311,721.75 × 81,484.92 - Step 4: Simplify right side
207,821.97x = 25,400,621,861.01 - Step 5: Solve for x
x = 25,400,621,861.01/207,821.97 - Step 6: Final answer
x = 122,222.99
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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.