Finding the Fourth Proportional to 221,785.20, 306,063.56 and 121,183.20
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Solution
The fourth proportional to 221,785.20, 306,063.56 and 121,183.20 is: 167,232.81
Step by Step Solution
- Step 1: Write the proportion equation
221,785.20 : 306,063.56 = 121,183.20 : x - Step 2: Convert to fraction form
221,785.20/306,063.56 = 121,183.20/x - Step 3: Cross multiply
221,785.20x = 306,063.56 × 121,183.20 - Step 4: Simplify right side
221,785.20x = 37,089,761,604.19 - Step 5: Solve for x
x = 37,089,761,604.19/221,785.20 - Step 6: Final answer
x = 167,232.81
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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.