Finding the Fourth Proportional to 252,136.10, 378,283.44 and 74,644.68
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Solution
The fourth proportional to 252,136.10, 378,283.44 and 74,644.68 is: 111,990.49
Step by Step Solution
- Step 1: Write the proportion equation
252,136.10 : 378,283.44 = 74,644.68 : x - Step 2: Convert to fraction form
252,136.10/378,283.44 = 74,644.68/x - Step 3: Cross multiply
252,136.10x = 378,283.44 × 74,644.68 - Step 4: Simplify right side
252,136.10x = 28,236,846,328.10 - Step 5: Solve for x
x = 28,236,846,328.10/252,136.10 - Step 6: Final answer
x = 111,990.49
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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.