Finding the Fourth Proportional to 328,122.40, 492,183.60 and 272,135.20
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Solution
The fourth proportional to 328,122.40, 492,183.60 and 272,135.20 is: 408,202.80
Step by Step Solution
- Step 1: Write the proportion equation
328,122.40 : 492,183.60 = 272,135.20 : x - Step 2: Convert to fraction form
328,122.40/492,183.60 = 272,135.20/x - Step 3: Cross multiply
328,122.40x = 492,183.60 × 272,135.20 - Step 4: Simplify right side
328,122.40x = 133,940,482,422.72 - Step 5: Solve for x
x = 133,940,482,422.72/328,122.40 - Step 6: Final answer
x = 408,202.80
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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.