Finding the Fourth Proportional to 421,910.99, 582,235.04 and 228,318.56
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Solution
The fourth proportional to 421,910.99, 582,235.04 and 228,318.56 is: 315,078.46
Step by Step Solution
- Step 1: Write the proportion equation
421,910.99 : 582,235.04 = 228,318.56 : x - Step 2: Convert to fraction form
421,910.99/582,235.04 = 228,318.56/x - Step 3: Cross multiply
421,910.99x = 582,235.04 × 228,318.56 - Step 4: Simplify right side
421,910.99x = 132,935,061,861.57 - Step 5: Solve for x
x = 132,935,061,861.57/421,910.99 - Step 6: Final answer
x = 315,078.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.