Finding the Fourth Proportional to 393,535.19, 590,302.78 and 217,163.20
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Solution
The fourth proportional to 393,535.19, 590,302.78 and 217,163.20 is: 325,744.80
Step by Step Solution
- Step 1: Write the proportion equation
393,535.19 : 590,302.78 = 217,163.20 : x - Step 2: Convert to fraction form
393,535.19/590,302.78 = 217,163.20/x - Step 3: Cross multiply
393,535.19x = 590,302.78 × 217,163.20 - Step 4: Simplify right side
393,535.19x = 128,192,040,673.70 - Step 5: Solve for x
x = 128,192,040,673.70/393,535.19 - Step 6: Final answer
x = 325,744.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.