Finding the Fourth Proportional to 331,093.80, 496,640.70 and 81,775.80
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Solution
The fourth proportional to 331,093.80, 496,640.70 and 81,775.80 is: 122,663.70
Step by Step Solution
- Step 1: Write the proportion equation
331,093.80 : 496,640.70 = 81,775.80 : x - Step 2: Convert to fraction form
331,093.80/496,640.70 = 81,775.80/x - Step 3: Cross multiply
331,093.80x = 496,640.70 × 81,775.80 - Step 4: Simplify right side
331,093.80x = 40,613,190,555.06 - Step 5: Solve for x
x = 40,613,190,555.06/331,093.80 - Step 6: Final answer
x = 122,663.70
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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.