Finding the Fourth Proportional to 201,991.71, 278,736.04 and 111,342.99
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Solution
The fourth proportional to 201,991.71, 278,736.04 and 111,342.99 is: 153,646.42
Step by Step Solution
- Step 1: Write the proportion equation
201,991.71 : 278,736.04 = 111,342.99 : x - Step 2: Convert to fraction form
201,991.71/278,736.04 = 111,342.99/x - Step 3: Cross multiply
201,991.71x = 278,736.04 × 111,342.99 - Step 4: Simplify right side
201,991.71x = 31,035,304,114.36 - Step 5: Solve for x
x = 31,035,304,114.36/201,991.71 - Step 6: Final answer
x = 153,646.42
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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.