Finding the Fourth Proportional to 317,105.38, 437,619.09 and 189,756.46
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Solution
The fourth proportional to 317,105.38, 437,619.09 and 189,756.46 is: 261,872.09
Step by Step Solution
- Step 1: Write the proportion equation
317,105.38 : 437,619.09 = 189,756.46 : x - Step 2: Convert to fraction form
317,105.38/437,619.09 = 189,756.46/x - Step 3: Cross multiply
317,105.38x = 437,619.09 × 189,756.46 - Step 4: Simplify right side
317,105.38x = 83,041,049,346.82 - Step 5: Solve for x
x = 83,041,049,346.82/317,105.38 - Step 6: Final answer
x = 261,872.09
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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.