Finding the Fourth Proportional to 278,021.68, 383,635.57 and 197,419.79
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Solution
The fourth proportional to 278,021.68, 383,635.57 and 197,419.79 is: 272,414.92
Step by Step Solution
- Step 1: Write the proportion equation
278,021.68 : 383,635.57 = 197,419.79 : x - Step 2: Convert to fraction form
278,021.68/383,635.57 = 197,419.79/x - Step 3: Cross multiply
278,021.68x = 383,635.57 × 197,419.79 - Step 4: Simplify right side
278,021.68x = 75,737,253,665.93 - Step 5: Solve for x
x = 75,737,253,665.93/278,021.68 - Step 6: Final answer
x = 272,414.92
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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.