Finding the Fourth Proportional to 312,957.64, 431,716.26 and 192,122.92
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Solution
The fourth proportional to 312,957.64, 431,716.26 and 192,122.92 is: 265,028.16
Step by Step Solution
- Step 1: Write the proportion equation
312,957.64 : 431,716.26 = 192,122.92 : x - Step 2: Convert to fraction form
312,957.64/431,716.26 = 192,122.92/x - Step 3: Cross multiply
312,957.64x = 431,716.26 × 192,122.92 - Step 4: Simplify right side
312,957.64x = 82,942,588,482.68 - Step 5: Solve for x
x = 82,942,588,482.68/312,957.64 - Step 6: Final answer
x = 265,028.16
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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.