Finding the Fourth Proportional to 326,076.20, 489,138.60 and 115,686.80
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Solution
The fourth proportional to 326,076.20, 489,138.60 and 115,686.80 is: 173,538.82
Step by Step Solution
- Step 1: Write the proportion equation
326,076.20 : 489,138.60 = 115,686.80 : x - Step 2: Convert to fraction form
326,076.20/489,138.60 = 115,686.80/x - Step 3: Cross multiply
326,076.20x = 489,138.60 × 115,686.80 - Step 4: Simplify right side
326,076.20x = 56,586,879,390.48 - Step 5: Solve for x
x = 56,586,879,390.48/326,076.20 - Step 6: Final answer
x = 173,538.82
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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.