Finding the Fourth Proportional to 281,286.63, 388,179.20 and 153,959.49
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Solution
The fourth proportional to 281,286.63, 388,179.20 and 153,959.49 is: 212,466.09
Step by Step Solution
- Step 1: Write the proportion equation
281,286.63 : 388,179.20 = 153,959.49 : x - Step 2: Convert to fraction form
281,286.63/388,179.20 = 153,959.49/x - Step 3: Cross multiply
281,286.63x = 388,179.20 × 153,959.49 - Step 4: Simplify right side
281,286.63x = 59,763,871,660.61 - Step 5: Solve for x
x = 59,763,871,660.61/281,286.63 - Step 6: Final answer
x = 212,466.09
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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.