Finding the Fourth Proportional to 311,879.70, 467,819.55 and 311,879.70
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Solution
The fourth proportional to 311,879.70, 467,819.55 and 311,879.70 is: 467,819.55
Step by Step Solution
- Step 1: Write the proportion equation
311,879.70 : 467,819.55 = 311,879.70 : x - Step 2: Convert to fraction form
311,879.70/467,819.55 = 311,879.70/x - Step 3: Cross multiply
311,879.70x = 467,819.55 × 311,879.70 - Step 4: Simplify right side
311,879.70x = 145,903,420,908.14 - Step 5: Solve for x
x = 145,903,420,908.14/311,879.70 - Step 6: Final answer
x = 467,819.55
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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.