Finding the Fourth Proportional to 212,821.20, 319,231.80 and 202,453.20
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Solution
The fourth proportional to 212,821.20, 319,231.80 and 202,453.20 is: 303,679.80
Step by Step Solution
- Step 1: Write the proportion equation
212,821.20 : 319,231.80 = 202,453.20 : x - Step 2: Convert to fraction form
212,821.20/319,231.80 = 202,453.20/x - Step 3: Cross multiply
212,821.20x = 319,231.80 × 202,453.20 - Step 4: Simplify right side
212,821.20x = 64,629,499,451.76 - Step 5: Solve for x
x = 64,629,499,451.76/212,821.20 - Step 6: Final answer
x = 303,679.80
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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.