Finding the Fourth Proportional to 312,251.76, 430,915.80 and 189,702.42
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Solution
The fourth proportional to 312,251.76, 430,915.80 and 189,702.42 is: 261,794.43
Step by Step Solution
- Step 1: Write the proportion equation
312,251.76 : 430,915.80 = 189,702.42 : x - Step 2: Convert to fraction form
312,251.76/430,915.80 = 189,702.42/x - Step 3: Cross multiply
312,251.76x = 430,915.80 × 189,702.42 - Step 4: Simplify right side
312,251.76x = 81,745,770,076.24 - Step 5: Solve for x
x = 81,745,770,076.24/312,251.76 - Step 6: Final answer
x = 261,794.43
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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.