Finding the Fourth Proportional to 407,163.40, 561,885 and 225,902.80
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Solution
The fourth proportional to 407,163.40, 561,885 and 225,902.80 is: 311,745.59
Step by Step Solution
- Step 1: Write the proportion equation
407,163.40 : 561,885 = 225,902.80 : x - Step 2: Convert to fraction form
407,163.40/561,885 = 225,902.80/x - Step 3: Cross multiply
407,163.40x = 561,885 × 225,902.80 - Step 4: Simplify right side
407,163.40x = 126,931,394,778 - Step 5: Solve for x
x = 126,931,394,778/407,163.40 - Step 6: Final answer
x = 311,745.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.