Finding the Fourth Proportional to 455,414.20, 683,121.30 and 218,699.80
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Solution
The fourth proportional to 455,414.20, 683,121.30 and 218,699.80 is: 328,049.70
Step by Step Solution
- Step 1: Write the proportion equation
455,414.20 : 683,121.30 = 218,699.80 : x - Step 2: Convert to fraction form
455,414.20/683,121.30 = 218,699.80/x - Step 3: Cross multiply
455,414.20x = 683,121.30 × 218,699.80 - Step 4: Simplify right side
455,414.20x = 149,398,491,685.74 - Step 5: Solve for x
x = 149,398,491,685.74/455,414.20 - Step 6: Final answer
x = 328,049.70
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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.