Finding the Fourth Proportional to 217,855.14, 300,668.28 and 122,361.84
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Solution
The fourth proportional to 217,855.14, 300,668.28 and 122,361.84 is: 168,875.17
Step by Step Solution
- Step 1: Write the proportion equation
217,855.14 : 300,668.28 = 122,361.84 : x - Step 2: Convert to fraction form
217,855.14/300,668.28 = 122,361.84/x - Step 3: Cross multiply
217,855.14x = 300,668.28 × 122,361.84 - Step 4: Simplify right side
217,855.14x = 36,790,323,970.44 - Step 5: Solve for x
x = 36,790,323,970.44/217,855.14 - Step 6: Final answer
x = 168,875.17
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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.