Finding the Fourth Proportional to 312,865.62, 431,336.88 and 248,548.26
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Solution
The fourth proportional to 312,865.62, 431,336.88 and 248,548.26 is: 342,664.79
Step by Step Solution
- Step 1: Write the proportion equation
312,865.62 : 431,336.88 = 248,548.26 : x - Step 2: Convert to fraction form
312,865.62/431,336.88 = 248,548.26/x - Step 3: Cross multiply
312,865.62x = 431,336.88 × 248,548.26 - Step 4: Simplify right side
312,865.62x = 107,208,030,997.83 - Step 5: Solve for x
x = 107,208,030,997.83/312,865.62 - Step 6: Final answer
x = 342,664.79
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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.