Finding the Fourth Proportional to 209,664,694.80, 314,497,042.20 and 193,540,381.20
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Solution
The fourth proportional to 209,664,694.80, 314,497,042.20 and 193,540,381.20 is: 290,310,571.80
Step by Step Solution
- Step 1: Write the proportion equation
209,664,694.80 : 314,497,042.20 = 193,540,381.20 : x - Step 2: Convert to fraction form
209,664,694.80/314,497,042.20 = 193,540,381.20/x - Step 3: Cross multiply
209,664,694.80x = 314,497,042.20 × 193,540,381.20 - Step 4: Simplify right side
209,664,694.80x = 60,867,877,433,660,480 - Step 5: Solve for x
x = 60,867,877,433,660,480/209,664,694.80 - Step 6: Final answer
x = 290,310,571.80
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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.