Finding the Fourth Proportional to 306,125.20, 459,260.70 and 128,540.80
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Solution
The fourth proportional to 306,125.20, 459,260.70 and 128,540.80 is: 192,841.81
Step by Step Solution
- Step 1: Write the proportion equation
306,125.20 : 459,260.70 = 128,540.80 : x - Step 2: Convert to fraction form
306,125.20/459,260.70 = 128,540.80/x - Step 3: Cross multiply
306,125.20x = 459,260.70 × 128,540.80 - Step 4: Simplify right side
306,125.20x = 59,033,737,786.56 - Step 5: Solve for x
x = 59,033,737,786.56/306,125.20 - Step 6: Final answer
x = 192,841.81
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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.