Finding the Fourth Proportional to 492,757.70, 739,136.55 and 212,821.70
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Solution
The fourth proportional to 492,757.70, 739,136.55 and 212,821.70 is: 319,232.55
Step by Step Solution
- Step 1: Write the proportion equation
492,757.70 : 739,136.55 = 212,821.70 : x - Step 2: Convert to fraction form
492,757.70/739,136.55 = 212,821.70/x - Step 3: Cross multiply
492,757.70x = 739,136.55 × 212,821.70 - Step 4: Simplify right side
492,757.70x = 157,304,297,103.14 - Step 5: Solve for x
x = 157,304,297,103.14/492,757.70 - Step 6: Final answer
x = 319,232.55
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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.