Finding the Fourth Proportional to 281,219.19, 421,872.75 and 91,635.54
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Solution
The fourth proportional to 281,219.19, 421,872.75 and 91,635.54 is: 137,467.64
Step by Step Solution
- Step 1: Write the proportion equation
281,219.19 : 421,872.75 = 91,635.54 : x - Step 2: Convert to fraction form
281,219.19/421,872.75 = 91,635.54/x - Step 3: Cross multiply
281,219.19x = 421,872.75 × 91,635.54 - Step 4: Simplify right side
281,219.19x = 38,658,537,257.54 - Step 5: Solve for x
x = 38,658,537,257.54/281,219.19 - Step 6: Final answer
x = 137,467.64
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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.