Finding the Fourth Proportional to 326,490.75, 489,736.05 and 214,145.02
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Solution
The fourth proportional to 326,490.75, 489,736.05 and 214,145.02 is: 321,217.47
Step by Step Solution
- Step 1: Write the proportion equation
326,490.75 : 489,736.05 = 214,145.02 : x - Step 2: Convert to fraction form
326,490.75/489,736.05 = 214,145.02/x - Step 3: Cross multiply
326,490.75x = 489,736.05 × 214,145.02 - Step 4: Simplify right side
326,490.75x = 104,874,533,878.62 - Step 5: Solve for x
x = 104,874,533,878.62/326,490.75 - Step 6: Final answer
x = 321,217.47
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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.