Finding the Fourth Proportional to 280,922.99, 421,396.79 and 81,263.56
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Solution
The fourth proportional to 280,922.99, 421,396.79 and 81,263.56 is: 121,898.90
Step by Step Solution
- Step 1: Write the proportion equation
280,922.99 : 421,396.79 = 81,263.56 : x - Step 2: Convert to fraction form
280,922.99/421,396.79 = 81,263.56/x - Step 3: Cross multiply
280,922.99x = 421,396.79 × 81,263.56 - Step 4: Simplify right side
280,922.99x = 34,244,203,327.97 - Step 5: Solve for x
x = 34,244,203,327.97/280,922.99 - Step 6: Final answer
x = 121,898.90
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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.