Finding the Fourth Proportional to 287,571.12, 431,356.68 and 87,892.08
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Solution
The fourth proportional to 287,571.12, 431,356.68 and 87,892.08 is: 131,838.12
Step by Step Solution
- Step 1: Write the proportion equation
287,571.12 : 431,356.68 = 87,892.08 : x - Step 2: Convert to fraction form
287,571.12/431,356.68 = 87,892.08/x - Step 3: Cross multiply
287,571.12x = 431,356.68 × 87,892.08 - Step 4: Simplify right side
287,571.12x = 37,912,835,827.09 - Step 5: Solve for x
x = 37,912,835,827.09/287,571.12 - Step 6: Final answer
x = 131,838.12
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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.