Finding the Fourth Proportional to 419,658.40, 629,458.80 and 135,344.80
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Solution
The fourth proportional to 419,658.40, 629,458.80 and 135,344.80 is: 203,007.91
Step by Step Solution
- Step 1: Write the proportion equation
419,658.40 : 629,458.80 = 135,344.80 : x - Step 2: Convert to fraction form
419,658.40/629,458.80 = 135,344.80/x - Step 3: Cross multiply
419,658.40x = 629,458.80 × 135,344.80 - Step 4: Simplify right side
419,658.40x = 85,193,975,394.24 - Step 5: Solve for x
x = 85,193,975,394.24/419,658.40 - Step 6: Final answer
x = 203,007.91
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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.