Finding the Fourth Proportional to 319,721.68, 479,571.12 and 79,836.92
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Solution
The fourth proportional to 319,721.68, 479,571.12 and 79,836.92 is: 119,752.53
Step by Step Solution
- Step 1: Write the proportion equation
319,721.68 : 479,571.12 = 79,836.92 : x - Step 2: Convert to fraction form
319,721.68/479,571.12 = 79,836.92/x - Step 3: Cross multiply
319,721.68x = 479,571.12 × 79,836.92 - Step 4: Simplify right side
319,721.68x = 38,287,481,141.75 - Step 5: Solve for x
x = 38,287,481,141.75/319,721.68 - Step 6: Final answer
x = 119,752.53
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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.