Finding the Fourth Proportional to 326,077.20, 489,115.80 and 211,915.80
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Solution
The fourth proportional to 326,077.20, 489,115.80 and 211,915.80 is: 317,873.70
Step by Step Solution
- Step 1: Write the proportion equation
326,077.20 : 489,115.80 = 211,915.80 : x - Step 2: Convert to fraction form
326,077.20/489,115.80 = 211,915.80/x - Step 3: Cross multiply
326,077.20x = 489,115.80 × 211,915.80 - Step 4: Simplify right side
326,077.20x = 103,651,366,049.64 - Step 5: Solve for x
x = 103,651,366,049.64/326,077.20 - Step 6: Final answer
x = 317,873.70
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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.