Finding the Fourth Proportional to 397,709.47, 548,851.42 and 225,634.68
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Solution
The fourth proportional to 397,709.47, 548,851.42 and 225,634.68 is: 311,382.87
Step by Step Solution
- Step 1: Write the proportion equation
397,709.47 : 548,851.42 = 225,634.68 : x - Step 2: Convert to fraction form
397,709.47/548,851.42 = 225,634.68/x - Step 3: Cross multiply
397,709.47x = 548,851.42 × 225,634.68 - Step 4: Simplify right side
397,709.47x = 123,839,914,519.25 - Step 5: Solve for x
x = 123,839,914,519.25/397,709.47 - Step 6: Final answer
x = 311,382.87
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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.