Finding the Fourth Proportional to 207,318.70, 311,306.10 and 157,455.10
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Solution
The fourth proportional to 207,318.70, 311,306.10 and 157,455.10 is: 236,431.80
Step by Step Solution
- Step 1: Write the proportion equation
207,318.70 : 311,306.10 = 157,455.10 : x - Step 2: Convert to fraction form
207,318.70/311,306.10 = 157,455.10/x - Step 3: Cross multiply
207,318.70x = 311,306.10 × 157,455.10 - Step 4: Simplify right side
207,318.70x = 49,016,733,106.11 - Step 5: Solve for x
x = 49,016,733,106.11/207,318.70 - Step 6: Final answer
x = 236,431.80
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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.