Finding the Fourth Proportional to 285,509.34, 428,230.89 and 75,163.68
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Solution
The fourth proportional to 285,509.34, 428,230.89 and 75,163.68 is: 112,736.80
Step by Step Solution
- Step 1: Write the proportion equation
285,509.34 : 428,230.89 = 75,163.68 : x - Step 2: Convert to fraction form
285,509.34/428,230.89 = 75,163.68/x - Step 3: Cross multiply
285,509.34x = 428,230.89 × 75,163.68 - Step 4: Simplify right side
285,509.34x = 32,187,409,582.08 - Step 5: Solve for x
x = 32,187,409,582.08/285,509.34 - Step 6: Final answer
x = 112,736.80
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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.