Finding the Fourth Proportional to 209,074.79, 288,524.36 and 128,554.91
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Solution
The fourth proportional to 209,074.79, 288,524.36 and 128,554.91 is: 177,406.49
Step by Step Solution
- Step 1: Write the proportion equation
209,074.79 : 288,524.36 = 128,554.91 : x - Step 2: Convert to fraction form
209,074.79/288,524.36 = 128,554.91/x - Step 3: Cross multiply
209,074.79x = 288,524.36 × 128,554.91 - Step 4: Simplify right side
209,074.79x = 37,091,224,716.29 - Step 5: Solve for x
x = 37,091,224,716.29/209,074.79 - Step 6: Final answer
x = 177,406.49
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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.