Finding the Fourth Proportional to 311,912.70, 467,869.05 and 278,670.30
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Solution
The fourth proportional to 311,912.70, 467,869.05 and 278,670.30 is: 418,005.45
Step by Step Solution
- Step 1: Write the proportion equation
311,912.70 : 467,869.05 = 278,670.30 : x - Step 2: Convert to fraction form
311,912.70/467,869.05 = 278,670.30/x - Step 3: Cross multiply
311,912.70x = 467,869.05 × 278,670.30 - Step 4: Simplify right side
311,912.70x = 130,381,208,524.22 - Step 5: Solve for x
x = 130,381,208,524.22/311,912.70 - Step 6: Final answer
x = 418,005.45
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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.