Finding the Fourth Proportional to 201,639.44, 278,259.72 and 112,215.44
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Solution
The fourth proportional to 201,639.44, 278,259.72 and 112,215.44 is: 154,855.80
Step by Step Solution
- Step 1: Write the proportion equation
201,639.44 : 278,259.72 = 112,215.44 : x - Step 2: Convert to fraction form
201,639.44/278,259.72 = 112,215.44/x - Step 3: Cross multiply
201,639.44x = 278,259.72 × 112,215.44 - Step 4: Simplify right side
201,639.44x = 31,225,036,914.08 - Step 5: Solve for x
x = 31,225,036,914.08/201,639.44 - Step 6: Final answer
x = 154,855.80
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1.5x scale
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.