Finding the Fourth Proportional to 378,345.91, 522,120.99 and 208,586.11
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Solution
The fourth proportional to 378,345.91, 522,120.99 and 208,586.11 is: 287,850.84
Step by Step Solution
- Step 1: Write the proportion equation
378,345.91 : 522,120.99 = 208,586.11 : x - Step 2: Convert to fraction form
378,345.91/522,120.99 = 208,586.11/x - Step 3: Cross multiply
378,345.91x = 522,120.99 × 208,586.11 - Step 4: Simplify right side
378,345.91x = 108,907,186,253.45 - Step 5: Solve for x
x = 108,907,186,253.45/378,345.91 - Step 6: Final answer
x = 287,850.84
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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.