Finding the Fourth Proportional to 378,562.38, 522,415.08 and 217,427.87
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Solution
The fourth proportional to 378,562.38, 522,415.08 and 217,427.87 is: 300,049.88
Step by Step Solution
- Step 1: Write the proportion equation
378,562.38 : 522,415.08 = 217,427.87 : x - Step 2: Convert to fraction form
378,562.38/522,415.08 = 217,427.87/x - Step 3: Cross multiply
378,562.38x = 522,415.08 × 217,427.87 - Step 4: Simplify right side
378,562.38x = 113,587,595,488.20 - Step 5: Solve for x
x = 113,587,595,488.20/378,562.38 - Step 6: Final answer
x = 300,049.88
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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.