Finding the Fourth Proportional to 326,369.57, 489,578.06 and 136,639.13
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Solution
The fourth proportional to 326,369.57, 489,578.06 and 136,639.13 is: 204,968.62
Step by Step Solution
- Step 1: Write the proportion equation
326,369.57 : 489,578.06 = 136,639.13 : x - Step 2: Convert to fraction form
326,369.57/489,578.06 = 136,639.13/x - Step 3: Cross multiply
326,369.57x = 489,578.06 × 136,639.13 - Step 4: Simplify right side
326,369.57x = 66,895,518,079.20 - Step 5: Solve for x
x = 66,895,518,079.20/326,369.57 - Step 6: Final answer
x = 204,968.62
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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.