Finding the Fourth Proportional to 419,720.05, 629,765.97 and 219,992.95
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Solution
The fourth proportional to 419,720.05, 629,765.97 and 219,992.95 is: 330,086.86
Step by Step Solution
- Step 1: Write the proportion equation
419,720.05 : 629,765.97 = 219,992.95 : x - Step 2: Convert to fraction form
419,720.05/629,765.97 = 219,992.95/x - Step 3: Cross multiply
419,720.05x = 629,765.97 × 219,992.95 - Step 4: Simplify right side
419,720.05x = 138,544,073,549.91 - Step 5: Solve for x
x = 138,544,073,549.91/419,720.05 - Step 6: Final answer
x = 330,086.86
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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.