Finding the Fourth Proportional to 378,798.24, 522,771.12 and 217,709.52
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Solution
The fourth proportional to 378,798.24, 522,771.12 and 217,709.52 is: 300,456.12
Step by Step Solution
- Step 1: Write the proportion equation
378,798.24 : 522,771.12 = 217,709.52 : x - Step 2: Convert to fraction form
378,798.24/522,771.12 = 217,709.52/x - Step 3: Cross multiply
378,798.24x = 522,771.12 × 217,709.52 - Step 4: Simplify right side
378,798.24x = 113,812,249,605.06 - Step 5: Solve for x
x = 113,812,249,605.06/378,798.24 - Step 6: Final answer
x = 300,456.12
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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.