Finding the Fourth Proportional to 388,159.70, 582,234.08 and 121,936.19
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Solution
The fourth proportional to 388,159.70, 582,234.08 and 121,936.19 is: 182,902.56
Step by Step Solution
- Step 1: Write the proportion equation
388,159.70 : 582,234.08 = 121,936.19 : x - Step 2: Convert to fraction form
388,159.70/582,234.08 = 121,936.19/x - Step 3: Cross multiply
388,159.70x = 582,234.08 × 121,936.19 - Step 4: Simplify right side
388,159.70x = 70,995,401,882.50 - Step 5: Solve for x
x = 70,995,401,882.50/388,159.70 - Step 6: Final answer
x = 182,902.56
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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.