Finding the Fourth Proportional to 287,570.12, 431,355.18 and 87,891.08
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Solution
The fourth proportional to 287,570.12, 431,355.18 and 87,891.08 is: 131,836.62
Step by Step Solution
- Step 1: Write the proportion equation
287,570.12 : 431,355.18 = 87,891.08 : x - Step 2: Convert to fraction form
287,570.12/431,355.18 = 87,891.08/x - Step 3: Cross multiply
287,570.12x = 431,355.18 × 87,891.08 - Step 4: Simplify right side
287,570.12x = 37,912,272,633.79 - Step 5: Solve for x
x = 37,912,272,633.79/287,570.12 - Step 6: Final answer
x = 131,836.62
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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.