Finding the Fourth Proportional to 311,872.68, 430,382.77 and 189,322.31
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Solution
The fourth proportional to 311,872.68, 430,382.77 and 189,322.31 is: 261,263.86
Step by Step Solution
- Step 1: Write the proportion equation
311,872.68 : 430,382.77 = 189,322.31 : x - Step 2: Convert to fraction form
311,872.68/430,382.77 = 189,322.31/x - Step 3: Cross multiply
311,872.68x = 430,382.77 × 189,322.31 - Step 4: Simplify right side
311,872.68x = 81,481,060,803.25 - Step 5: Solve for x
x = 81,481,060,803.25/311,872.68 - Step 6: Final answer
x = 261,263.86
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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.