Finding the Fourth Proportional to 505,661.70, 758,383.20 and 221,351.70
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Solution
The fourth proportional to 505,661.70, 758,383.20 and 221,351.70 is: 331,979.68
Step by Step Solution
- Step 1: Write the proportion equation
505,661.70 : 758,383.20 = 221,351.70 : x - Step 2: Convert to fraction form
505,661.70/758,383.20 = 221,351.70/x - Step 3: Cross multiply
505,661.70x = 758,383.20 × 221,351.70 - Step 4: Simplify right side
505,661.70x = 167,869,410,571.44 - Step 5: Solve for x
x = 167,869,410,571.44/505,661.70 - Step 6: Final answer
x = 331,979.68
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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.