Finding the Fourth Proportional to 278,960.49, 379,815.35 and 278,074.75
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Solution
The fourth proportional to 278,960.49, 379,815.35 and 278,074.75 is: 378,609.39
Step by Step Solution
- Step 1: Write the proportion equation
278,960.49 : 379,815.35 = 278,074.75 : x - Step 2: Convert to fraction form
278,960.49/379,815.35 = 278,074.75/x - Step 3: Cross multiply
278,960.49x = 379,815.35 × 278,074.75 - Step 4: Simplify right side
278,960.49x = 105,617,060,489.73 - Step 5: Solve for x
x = 105,617,060,489.73/278,960.49 - Step 6: Final answer
x = 378,609.39
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Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.