Finding the Fourth Proportional to 281,245.41, 421,912.08 and 91,661.70
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Solution
The fourth proportional to 281,245.41, 421,912.08 and 91,661.70 is: 137,506.88
Step by Step Solution
- Step 1: Write the proportion equation
281,245.41 : 421,912.08 = 91,661.70 : x - Step 2: Convert to fraction form
281,245.41/421,912.08 = 91,661.70/x - Step 3: Cross multiply
281,245.41x = 421,912.08 × 91,661.70 - Step 4: Simplify right side
281,245.41x = 38,673,178,503.34 - Step 5: Solve for x
x = 38,673,178,503.34/281,245.41 - Step 6: Final answer
x = 137,506.88
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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.