Finding the Fourth Proportional to 207,838.58, 311,306.72 and 127,633.14
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Solution
The fourth proportional to 207,838.58, 311,306.72 and 127,633.14 is: 191,172.66
Step by Step Solution
- Step 1: Write the proportion equation
207,838.58 : 311,306.72 = 127,633.14 : x - Step 2: Convert to fraction form
207,838.58/311,306.72 = 127,633.14/x - Step 3: Cross multiply
207,838.58x = 311,306.72 × 127,633.14 - Step 4: Simplify right side
207,838.58x = 39,733,054,176.70 - Step 5: Solve for x
x = 39,733,054,176.70/207,838.58 - Step 6: Final answer
x = 191,172.66
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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.