Finding the Fourth Proportional to 221,165,115.40, 331,324,658.70 and 118,895,163.40
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Solution
The fourth proportional to 221,165,115.40, 331,324,658.70 and 118,895,163.40 is: 178,115,338.68
Step by Step Solution
- Step 1: Write the proportion equation
221,165,115.40 : 331,324,658.70 = 118,895,163.40 : x - Step 2: Convert to fraction form
221,165,115.40/331,324,658.70 = 118,895,163.40/x - Step 3: Cross multiply
221,165,115.40x = 331,324,658.70 × 118,895,163.40 - Step 4: Simplify right side
221,165,115.40x = 39,392,899,434,585,736 - Step 5: Solve for x
x = 39,392,899,434,585,736/221,165,115.40 - Step 6: Final answer
x = 178,115,338.68
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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.