Finding the Fourth Proportional to 221,785.70, 306,064.25 and 121,183.70
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Solution
The fourth proportional to 221,785.70, 306,064.25 and 121,183.70 is: 167,233.49
Step by Step Solution
- Step 1: Write the proportion equation
221,785.70 : 306,064.25 = 121,183.70 : x - Step 2: Convert to fraction form
221,785.70/306,064.25 = 121,183.70/x - Step 3: Cross multiply
221,785.70x = 306,064.25 × 121,183.70 - Step 4: Simplify right side
221,785.70x = 37,089,996,116.49 - Step 5: Solve for x
x = 37,089,996,116.49/221,785.70 - Step 6: Final answer
x = 167,233.49
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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.