Finding the Fourth Proportional to 415,163.20, 622,658.40 and 115,566.40
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Solution
The fourth proportional to 415,163.20, 622,658.40 and 115,566.40 is: 173,325.55
Step by Step Solution
- Step 1: Write the proportion equation
415,163.20 : 622,658.40 = 115,566.40 : x - Step 2: Convert to fraction form
415,163.20/622,658.40 = 115,566.40/x - Step 3: Cross multiply
415,163.20x = 622,658.40 × 115,566.40 - Step 4: Simplify right side
415,163.20x = 71,958,389,717.76 - Step 5: Solve for x
x = 71,958,389,717.76/415,163.20 - Step 6: Final answer
x = 173,325.55
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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.