Finding the Fourth Proportional to 221,217.66, 305,163.99 and 149,621.76
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Solution
The fourth proportional to 221,217.66, 305,163.99 and 149,621.76 is: 206,399.31
Step by Step Solution
- Step 1: Write the proportion equation
221,217.66 : 305,163.99 = 149,621.76 : x - Step 2: Convert to fraction form
221,217.66/305,163.99 = 149,621.76/x - Step 3: Cross multiply
221,217.66x = 305,163.99 × 149,621.76 - Step 4: Simplify right side
221,217.66x = 45,659,173,272.42 - Step 5: Solve for x
x = 45,659,173,272.42/221,217.66 - Step 6: Final answer
x = 206,399.31
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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.