Finding the Fourth Proportional to 221,656.43, 305,886.21 and 126,163.13
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Solution
The fourth proportional to 221,656.43, 305,886.21 and 126,163.13 is: 174,105.31
Step by Step Solution
- Step 1: Write the proportion equation
221,656.43 : 305,886.21 = 126,163.13 : x - Step 2: Convert to fraction form
221,656.43/305,886.21 = 126,163.13/x - Step 3: Cross multiply
221,656.43x = 305,886.21 × 126,163.13 - Step 4: Simplify right side
221,656.43x = 38,591,560,621.12 - Step 5: Solve for x
x = 38,591,560,621.12/221,656.43 - Step 6: Final answer
x = 174,105.31
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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.