Finding the Fourth Proportional to 481,786.20, 722,387.70 and 215,497.08
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Solution
The fourth proportional to 481,786.20, 722,387.70 and 215,497.08 is: 323,115.19
Step by Step Solution
- Step 1: Write the proportion equation
481,786.20 : 722,387.70 = 215,497.08 : x - Step 2: Convert to fraction form
481,786.20/722,387.70 = 215,497.08/x - Step 3: Cross multiply
481,786.20x = 722,387.70 × 215,497.08 - Step 4: Simplify right side
481,786.20x = 155,672,439,977.92 - Step 5: Solve for x
x = 155,672,439,977.92/481,786.20 - Step 6: Final answer
x = 323,115.19
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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.