Finding the Fourth Proportional to 208,855.19, 288,220.48 and 113,361.96
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Solution
The fourth proportional to 208,855.19, 288,220.48 and 113,361.96 is: 156,439.68
Step by Step Solution
- Step 1: Write the proportion equation
208,855.19 : 288,220.48 = 113,361.96 : x - Step 2: Convert to fraction form
208,855.19/288,220.48 = 113,361.96/x - Step 3: Cross multiply
208,855.19x = 288,220.48 × 113,361.96 - Step 4: Simplify right side
208,855.19x = 32,673,239,322.36 - Step 5: Solve for x
x = 32,673,239,322.36/208,855.19 - Step 6: Final answer
x = 156,439.68
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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.