Finding the Fourth Proportional to 397,684.40, 548,813.87 and 225,613.99
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Solution
The fourth proportional to 397,684.40, 548,813.87 and 225,613.99 is: 311,352.64
Step by Step Solution
- Step 1: Write the proportion equation
397,684.40 : 548,813.87 = 225,613.99 : x - Step 2: Convert to fraction form
397,684.40/548,813.87 = 225,613.99/x - Step 3: Cross multiply
397,684.40x = 548,813.87 × 225,613.99 - Step 4: Simplify right side
397,684.40x = 123,820,086,978.04 - Step 5: Solve for x
x = 123,820,086,978.04/397,684.40 - Step 6: Final answer
x = 311,352.64
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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.