Finding the Fourth Proportional to 212,743.20, 319,114.80 and 202,375.20
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Solution
The fourth proportional to 212,743.20, 319,114.80 and 202,375.20 is: 303,562.80
Step by Step Solution
- Step 1: Write the proportion equation
212,743.20 : 319,114.80 = 202,375.20 : x - Step 2: Convert to fraction form
212,743.20/319,114.80 = 202,375.20/x - Step 3: Cross multiply
212,743.20x = 319,114.80 × 202,375.20 - Step 4: Simplify right side
212,743.20x = 64,580,921,472.96 - Step 5: Solve for x
x = 64,580,921,472.96/212,743.20 - Step 6: Final answer
x = 303,562.80
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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.