Finding the Fourth Proportional to 331,279.70, 496,919.55 and 81,961.70
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Solution
The fourth proportional to 331,279.70, 496,919.55 and 81,961.70 is: 122,942.55
Step by Step Solution
- Step 1: Write the proportion equation
331,279.70 : 496,919.55 = 81,961.70 : x - Step 2: Convert to fraction form
331,279.70/496,919.55 = 81,961.70/x - Step 3: Cross multiply
331,279.70x = 496,919.55 × 81,961.70 - Step 4: Simplify right side
331,279.70x = 40,728,371,081.24 - Step 5: Solve for x
x = 40,728,371,081.24/331,279.70 - Step 6: Final answer
x = 122,942.55
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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.