Finding the Fourth Proportional to 287,382.62, 431,073.93 and 87,704.06
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Solution
The fourth proportional to 287,382.62, 431,073.93 and 87,704.06 is: 131,556.09
Step by Step Solution
- Step 1: Write the proportion equation
287,382.62 : 431,073.93 = 87,704.06 : x - Step 2: Convert to fraction form
287,382.62/431,073.93 = 87,704.06/x - Step 3: Cross multiply
287,382.62x = 431,073.93 × 87,704.06 - Step 4: Simplify right side
287,382.62x = 37,806,933,821.16 - Step 5: Solve for x
x = 37,806,933,821.16/287,382.62 - Step 6: Final answer
x = 131,556.09
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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.