Finding the Fourth Proportional to 281,254.97, 388,129.56 and 153,930.26
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Solution
The fourth proportional to 281,254.97, 388,129.56 and 153,930.26 is: 212,422.50
Step by Step Solution
- Step 1: Write the proportion equation
281,254.97 : 388,129.56 = 153,930.26 : x - Step 2: Convert to fraction form
281,254.97/388,129.56 = 153,930.26/x - Step 3: Cross multiply
281,254.97x = 388,129.56 × 153,930.26 - Step 4: Simplify right side
281,254.97x = 59,744,882,143.84 - Step 5: Solve for x
x = 59,744,882,143.84/281,254.97 - Step 6: Final answer
x = 212,422.50
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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.