Finding the Fourth Proportional to 212,821.80, 319,232.70 and 194,850.60
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Solution
The fourth proportional to 212,821.80, 319,232.70 and 194,850.60 is: 292,275.90
Step by Step Solution
- Step 1: Write the proportion equation
212,821.80 : 319,232.70 = 194,850.60 : x - Step 2: Convert to fraction form
212,821.80/319,232.70 = 194,850.60/x - Step 3: Cross multiply
212,821.80x = 319,232.70 × 194,850.60 - Step 4: Simplify right side
212,821.80x = 62,202,683,134.62 - Step 5: Solve for x
x = 62,202,683,134.62/212,821.80 - Step 6: Final answer
x = 292,275.90
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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.