Finding the Fourth Proportional to 326,042.20, 489,149.70 and 115,658.20
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Solution
The fourth proportional to 326,042.20, 489,149.70 and 115,658.20 is: 173,517.95
Step by Step Solution
- Step 1: Write the proportion equation
326,042.20 : 489,149.70 = 115,658.20 : x - Step 2: Convert to fraction form
326,042.20/489,149.70 = 115,658.20/x - Step 3: Cross multiply
326,042.20x = 489,149.70 × 115,658.20 - Step 4: Simplify right side
326,042.20x = 56,574,173,832.54 - Step 5: Solve for x
x = 56,574,173,832.54/326,042.20 - Step 6: Final answer
x = 173,517.95
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1.5x scale
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.