Finding the Fourth Proportional to 326,423.20, 489,578.36 and 86,538.68
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Solution
The fourth proportional to 326,423.20, 489,578.36 and 86,538.68 is: 129,793.06
Step by Step Solution
- Step 1: Write the proportion equation
326,423.20 : 489,578.36 = 86,538.68 : x - Step 2: Convert to fraction form
326,423.20/489,578.36 = 86,538.68/x - Step 3: Cross multiply
326,423.20x = 489,578.36 × 86,538.68 - Step 4: Simplify right side
326,423.20x = 42,367,465,247.31 - Step 5: Solve for x
x = 42,367,465,247.31/326,423.20 - Step 6: Final answer
x = 129,793.06
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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.