Finding the Fourth Proportional to 396,771.21, 547,757.51 and 305,928.09
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Solution
The fourth proportional to 396,771.21, 547,757.51 and 305,928.09 is: 422,345.18
Step by Step Solution
- Step 1: Write the proportion equation
396,771.21 : 547,757.51 = 305,928.09 : x - Step 2: Convert to fraction form
396,771.21/547,757.51 = 305,928.09/x - Step 3: Cross multiply
396,771.21x = 547,757.51 × 305,928.09 - Step 4: Simplify right side
396,771.21x = 167,574,407,287.82 - Step 5: Solve for x
x = 167,574,407,287.82/396,771.21 - Step 6: Final answer
x = 422,345.18
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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.