Finding the Fourth Proportional to 221,649.75, 305,876.66 and 121,047.75
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Solution
The fourth proportional to 221,649.75, 305,876.66 and 121,047.75 is: 167,045.90
Step by Step Solution
- Step 1: Write the proportion equation
221,649.75 : 305,876.66 = 121,047.75 : x - Step 2: Convert to fraction form
221,649.75/305,876.66 = 121,047.75/x - Step 3: Cross multiply
221,649.75x = 305,876.66 × 121,047.75 - Step 4: Simplify right side
221,649.75x = 37,025,680,865.28 - Step 5: Solve for x
x = 37,025,680,865.28/221,649.75 - Step 6: Final answer
x = 167,045.90
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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.