Finding the Fourth Proportional to 378,578.58, 522,438.84 and 217,464.80
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Solution
The fourth proportional to 378,578.58, 522,438.84 and 217,464.80 is: 300,101.65
Step by Step Solution
- Step 1: Write the proportion equation
378,578.58 : 522,438.84 = 217,464.80 : x - Step 2: Convert to fraction form
378,578.58/522,438.84 = 217,464.80/x - Step 3: Cross multiply
378,578.58x = 522,438.84 × 217,464.80 - Step 4: Simplify right side
378,578.58x = 113,612,057,567.74 - Step 5: Solve for x
x = 113,612,057,567.74/378,578.58 - Step 6: Final answer
x = 300,101.65
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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.