Finding the Fourth Proportional to 459,838.20, 689,394.42 and 193,639.80
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Solution
The fourth proportional to 459,838.20, 689,394.42 and 193,639.80 is: 290,306.89
Step by Step Solution
- Step 1: Write the proportion equation
459,838.20 : 689,394.42 = 193,639.80 : x - Step 2: Convert to fraction form
459,838.20/689,394.42 = 193,639.80/x - Step 3: Cross multiply
459,838.20x = 689,394.42 × 193,639.80 - Step 4: Simplify right side
459,838.20x = 133,494,197,609.92 - Step 5: Solve for x
x = 133,494,197,609.92/459,838.20 - Step 6: Final answer
x = 290,306.89
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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.