Finding the Fourth Proportional to 281,287.13, 388,179.89 and 153,959.99
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Solution
The fourth proportional to 281,287.13, 388,179.89 and 153,959.99 is: 212,466.78
Step by Step Solution
- Step 1: Write the proportion equation
281,287.13 : 388,179.89 = 153,959.99 : x - Step 2: Convert to fraction form
281,287.13/388,179.89 = 153,959.99/x - Step 3: Cross multiply
281,287.13x = 388,179.89 × 153,959.99 - Step 4: Simplify right side
281,287.13x = 59,764,171,982.60 - Step 5: Solve for x
x = 59,764,171,982.60/281,287.13 - Step 6: Final answer
x = 212,466.78
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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.