Finding the Fourth Proportional to 378,487.74, 522,308.84 and 206,405.12
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Solution
The fourth proportional to 378,487.74, 522,308.84 and 206,405.12 is: 284,836.75
Step by Step Solution
- Step 1: Write the proportion equation
378,487.74 : 522,308.84 = 206,405.12 : x - Step 2: Convert to fraction form
378,487.74/522,308.84 = 206,405.12/x - Step 3: Cross multiply
378,487.74x = 522,308.84 × 206,405.12 - Step 4: Simplify right side
378,487.74x = 107,807,218,797.26 - Step 5: Solve for x
x = 107,807,218,797.26/378,487.74 - Step 6: Final answer
x = 284,836.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.