Finding the Fourth Proportional to 331,193.80, 496,790.70 and 278,705.80
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Solution
The fourth proportional to 331,193.80, 496,790.70 and 278,705.80 is: 418,058.70
Step by Step Solution
- Step 1: Write the proportion equation
331,193.80 : 496,790.70 = 278,705.80 : x - Step 2: Convert to fraction form
331,193.80/496,790.70 = 278,705.80/x - Step 3: Cross multiply
331,193.80x = 496,790.70 × 278,705.80 - Step 4: Simplify right side
331,193.80x = 138,458,449,476.06 - Step 5: Solve for x
x = 138,458,449,476.06/331,193.80 - Step 6: Final answer
x = 418,058.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.