Finding the Fourth Proportional to 312,716.09, 431,565.27 and 176,755.97
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Solution
The fourth proportional to 312,716.09, 431,565.27 and 176,755.97 is: 243,932.88
Step by Step Solution
- Step 1: Write the proportion equation
312,716.09 : 431,565.27 = 176,755.97 : x - Step 2: Convert to fraction form
312,716.09/431,565.27 = 176,755.97/x - Step 3: Cross multiply
312,716.09x = 431,565.27 × 176,755.97 - Step 4: Simplify right side
312,716.09x = 76,281,738,333.24 - Step 5: Solve for x
x = 76,281,738,333.24/312,716.09 - Step 6: Final answer
x = 243,932.88
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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.