Finding the Fourth Proportional to 220,251.75, 303,921.63 and 129,587.79
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Solution
The fourth proportional to 220,251.75, 303,921.63 and 129,587.79 is: 178,815.98
Step by Step Solution
- Step 1: Write the proportion equation
220,251.75 : 303,921.63 = 129,587.79 : x - Step 2: Convert to fraction form
220,251.75/303,921.63 = 129,587.79/x - Step 3: Cross multiply
220,251.75x = 303,921.63 × 129,587.79 - Step 4: Simplify right side
220,251.75x = 39,384,532,364.90 - Step 5: Solve for x
x = 39,384,532,364.90/220,251.75 - Step 6: Final answer
x = 178,815.98
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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.