Finding the Fourth Proportional to 212,939.20, 319,408.80 and 202,571.20
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Solution
The fourth proportional to 212,939.20, 319,408.80 and 202,571.20 is: 303,856.80
Step by Step Solution
- Step 1: Write the proportion equation
212,939.20 : 319,408.80 = 202,571.20 : x - Step 2: Convert to fraction form
212,939.20/319,408.80 = 202,571.20/x - Step 3: Cross multiply
212,939.20x = 319,408.80 × 202,571.20 - Step 4: Simplify right side
212,939.20x = 64,703,023,906.56 - Step 5: Solve for x
x = 64,703,023,906.56/212,939.20 - Step 6: Final answer
x = 303,856.80
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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.