Finding the Fourth Proportional to 356,418.12, 491,920.38 and 213,193.92
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Solution
The fourth proportional to 356,418.12, 491,920.38 and 213,193.92 is: 294,245.52
Step by Step Solution
- Step 1: Write the proportion equation
356,418.12 : 491,920.38 = 213,193.92 : x - Step 2: Convert to fraction form
356,418.12/491,920.38 = 213,193.92/x - Step 3: Cross multiply
356,418.12x = 491,920.38 × 213,193.92 - Step 4: Simplify right side
356,418.12x = 104,874,434,140.09 - Step 5: Solve for x
x = 104,874,434,140.09/356,418.12 - Step 6: Final answer
x = 294,245.52
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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.