Finding the Fourth Proportional to 207,911.80, 311,867.70 and 102,935.80
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Solution
The fourth proportional to 207,911.80, 311,867.70 and 102,935.80 is: 154,403.70
Step by Step Solution
- Step 1: Write the proportion equation
207,911.80 : 311,867.70 = 102,935.80 : x - Step 2: Convert to fraction form
207,911.80/311,867.70 = 102,935.80/x - Step 3: Cross multiply
207,911.80x = 311,867.70 × 102,935.80 - Step 4: Simplify right side
207,911.80x = 32,102,351,193.66 - Step 5: Solve for x
x = 32,102,351,193.66/207,911.80 - Step 6: Final answer
x = 154,403.70
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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.