Finding the Fourth Proportional to 385,738.20, 578,693.70 and 149,059.80
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Solution
The fourth proportional to 385,738.20, 578,693.70 and 149,059.80 is: 223,623.09
Step by Step Solution
- Step 1: Write the proportion equation
385,738.20 : 578,693.70 = 149,059.80 : x - Step 2: Convert to fraction form
385,738.20/578,693.70 = 149,059.80/x - Step 3: Cross multiply
385,738.20x = 578,693.70 × 149,059.80 - Step 4: Simplify right side
385,738.20x = 86,259,967,183.26 - Step 5: Solve for x
x = 86,259,967,183.26/385,738.20 - Step 6: Final answer
x = 223,623.09
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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.