Finding the Fourth Proportional to 280,680.99, 387,339.71 and 151,619.44
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Solution
The fourth proportional to 280,680.99, 387,339.71 and 151,619.44 is: 209,234.79
Step by Step Solution
- Step 1: Write the proportion equation
280,680.99 : 387,339.71 = 151,619.44 : x - Step 2: Convert to fraction form
280,680.99/387,339.71 = 151,619.44/x - Step 3: Cross multiply
280,680.99x = 387,339.71 × 151,619.44 - Step 4: Simplify right side
280,680.99x = 58,728,229,161.87 - Step 5: Solve for x
x = 58,728,229,161.87/280,680.99 - Step 6: Final answer
x = 209,234.79
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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.