Finding the Fourth Proportional to 281,093.80, 421,640.70 and 141,125.80
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Solution
The fourth proportional to 281,093.80, 421,640.70 and 141,125.80 is: 211,688.70
Step by Step Solution
- Step 1: Write the proportion equation
281,093.80 : 421,640.70 = 141,125.80 : x - Step 2: Convert to fraction form
281,093.80/421,640.70 = 141,125.80/x - Step 3: Cross multiply
281,093.80x = 421,640.70 × 141,125.80 - Step 4: Simplify right side
281,093.80x = 59,504,381,100.06 - Step 5: Solve for x
x = 59,504,381,100.06/281,093.80 - Step 6: Final answer
x = 211,688.70
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1.5x scale
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.