Finding the Fourth Proportional to 221,889.75, 306,207.86 and 121,287.75
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Solution
The fourth proportional to 221,889.75, 306,207.86 and 121,287.75 is: 167,377.10
Step by Step Solution
- Step 1: Write the proportion equation
221,889.75 : 306,207.86 = 121,287.75 : x - Step 2: Convert to fraction form
221,889.75/306,207.86 = 121,287.75/x - Step 3: Cross multiply
221,889.75x = 306,207.86 × 121,287.75 - Step 4: Simplify right side
221,889.75x = 37,139,261,765.28 - Step 5: Solve for x
x = 37,139,261,765.28/221,889.75 - Step 6: Final answer
x = 167,377.10
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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.