Finding the Fourth Proportional to 378,589.47, 522,453.84 and 217,475.70
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Solution
The fourth proportional to 378,589.47, 522,453.84 and 217,475.70 is: 300,116.68
Step by Step Solution
- Step 1: Write the proportion equation
378,589.47 : 522,453.84 = 217,475.70 : x - Step 2: Convert to fraction form
378,589.47/522,453.84 = 217,475.70/x - Step 3: Cross multiply
378,589.47x = 522,453.84 × 217,475.70 - Step 4: Simplify right side
378,589.47x = 113,621,014,571.69 - Step 5: Solve for x
x = 113,621,014,571.69/378,589.47 - Step 6: Final answer
x = 300,116.68
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1.5x scale
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.