Finding the Fourth Proportional to 221,863.38, 306,171.36 and 121,261.38
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Solution
The fourth proportional to 221,863.38, 306,171.36 and 121,261.38 is: 167,340.65
Step by Step Solution
- Step 1: Write the proportion equation
221,863.38 : 306,171.36 = 121,261.38 : x - Step 2: Convert to fraction form
221,863.38/306,171.36 = 121,261.38/x - Step 3: Cross multiply
221,863.38x = 306,171.36 × 121,261.38 - Step 4: Simplify right side
221,863.38x = 37,126,761,630.08 - Step 5: Solve for x
x = 37,126,761,630.08/221,863.38 - Step 6: Final answer
x = 167,340.65
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1.5x scale
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.