Finding the Fourth Proportional to 407,189.09, 561,924.34 and 225,912.92
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Solution
The fourth proportional to 407,189.09, 561,924.34 and 225,912.92 is: 311,761.70
Step by Step Solution
- Step 1: Write the proportion equation
407,189.09 : 561,924.34 = 225,912.92 : x - Step 2: Convert to fraction form
407,189.09/561,924.34 = 225,912.92/x - Step 3: Cross multiply
407,189.09x = 561,924.34 × 225,912.92 - Step 4: Simplify right side
407,189.09x = 126,945,965,094.07 - Step 5: Solve for x
x = 126,945,965,094.07/407,189.09 - Step 6: Final answer
x = 311,761.70
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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.