Finding the Fourth Proportional to 388,439,515.20, 582,491,311.20 and 194,275,905.60
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Solution
The fourth proportional to 388,439,515.20, 582,491,311.20 and 194,275,905.60 is: 291,329,853.32
Step by Step Solution
- Step 1: Write the proportion equation
388,439,515.20 : 582,491,311.20 = 194,275,905.60 : x - Step 2: Convert to fraction form
388,439,515.20/582,491,311.20 = 194,275,905.60/x - Step 3: Cross multiply
388,439,515.20x = 582,491,311.20 × 194,275,905.60 - Step 4: Simplify right side
388,439,515.20x = 113,164,026,987,511,424 - Step 5: Solve for x
x = 113,164,026,987,511,424/388,439,515.20 - Step 6: Final answer
x = 291,329,853.32
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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.