Finding the Fourth Proportional to 221,033.18, 305,025.79 and 120,431.18
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Solution
The fourth proportional to 221,033.18, 305,025.79 and 120,431.18 is: 166,195.03
Step by Step Solution
- Step 1: Write the proportion equation
221,033.18 : 305,025.79 = 120,431.18 : x - Step 2: Convert to fraction form
221,033.18/305,025.79 = 120,431.18/x - Step 3: Cross multiply
221,033.18x = 305,025.79 × 120,431.18 - Step 4: Simplify right side
221,033.18x = 36,734,615,480.19 - Step 5: Solve for x
x = 36,734,615,480.19/221,033.18 - Step 6: Final answer
x = 166,195.03
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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.