Finding the Fourth Proportional to 278,568.19, 384,424.09 and 151,243.80
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Solution
The fourth proportional to 278,568.19, 384,424.09 and 151,243.80 is: 208,716.44
Step by Step Solution
- Step 1: Write the proportion equation
278,568.19 : 384,424.09 = 151,243.80 : x - Step 2: Convert to fraction form
278,568.19/384,424.09 = 151,243.80/x - Step 3: Cross multiply
278,568.19x = 384,424.09 × 151,243.80 - Step 4: Simplify right side
278,568.19x = 58,141,760,183.14 - Step 5: Solve for x
x = 58,141,760,183.14/278,568.19 - Step 6: Final answer
x = 208,716.44
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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.