Finding the Fourth Proportional to 394,158.99, 543,939.28 and 212,870.96
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Solution
The fourth proportional to 394,158.99, 543,939.28 and 212,870.96 is: 293,761.85
Step by Step Solution
- Step 1: Write the proportion equation
394,158.99 : 543,939.28 = 212,870.96 : x - Step 2: Convert to fraction form
394,158.99/543,939.28 = 212,870.96/x - Step 3: Cross multiply
394,158.99x = 543,939.28 × 212,870.96 - Step 4: Simplify right side
394,158.99x = 115,788,877,107.88 - Step 5: Solve for x
x = 115,788,877,107.88/394,158.99 - Step 6: Final answer
x = 293,761.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.