Finding the Fourth Proportional to 221,575.09, 305,769.70 and 126,079.73
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Solution
The fourth proportional to 221,575.09, 305,769.70 and 126,079.73 is: 173,987.79
Step by Step Solution
- Step 1: Write the proportion equation
221,575.09 : 305,769.70 = 126,079.73 : x - Step 2: Convert to fraction form
221,575.09/305,769.70 = 126,079.73/x - Step 3: Cross multiply
221,575.09x = 305,769.70 × 126,079.73 - Step 4: Simplify right side
221,575.09x = 38,551,361,218.18 - Step 5: Solve for x
x = 38,551,361,218.18/221,575.09 - Step 6: Final answer
x = 173,987.79
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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.