Finding the Fourth Proportional to 278,290.65, 416,879.50 and 128,325.63
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Solution
The fourth proportional to 278,290.65, 416,879.50 and 128,325.63 is: 192,231.84
Step by Step Solution
- Step 1: Write the proportion equation
278,290.65 : 416,879.50 = 128,325.63 : x - Step 2: Convert to fraction form
278,290.65/416,879.50 = 128,325.63/x - Step 3: Cross multiply
278,290.65x = 416,879.50 × 128,325.63 - Step 4: Simplify right side
278,290.65x = 53,496,324,471.59 - Step 5: Solve for x
x = 53,496,324,471.59/278,290.65 - Step 6: Final answer
x = 192,231.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.