Finding the Fourth Proportional to 312,994.67, 431,930.49 and 169,755.08
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Solution
The fourth proportional to 312,994.67, 431,930.49 and 169,755.08 is: 234,260.84
Step by Step Solution
- Step 1: Write the proportion equation
312,994.67 : 431,930.49 = 169,755.08 : x - Step 2: Convert to fraction form
312,994.67/431,930.49 = 169,755.08/x - Step 3: Cross multiply
312,994.67x = 431,930.49 × 169,755.08 - Step 4: Simplify right side
312,994.67x = 73,322,394,884.39 - Step 5: Solve for x
x = 73,322,394,884.39/312,994.67 - Step 6: Final answer
x = 234,260.84
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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.