Finding the Fourth Proportional to 280,939.57, 387,721.94 and 160,119.79
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Solution
The fourth proportional to 280,939.57, 387,721.94 and 160,119.79 is: 220,979.75
Step by Step Solution
- Step 1: Write the proportion equation
280,939.57 : 387,721.94 = 160,119.79 : x - Step 2: Convert to fraction form
280,939.57/387,721.94 = 160,119.79/x - Step 3: Cross multiply
280,939.57x = 387,721.94 × 160,119.79 - Step 4: Simplify right side
280,939.57x = 62,081,955,611.19 - Step 5: Solve for x
x = 62,081,955,611.19/280,939.57 - Step 6: Final answer
x = 220,979.75
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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.