Finding the Fourth Proportional to 217,867.18, 300,686.97 and 122,381.14
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Solution
The fourth proportional to 217,867.18, 300,686.97 and 122,381.14 is: 168,902.97
Step by Step Solution
- Step 1: Write the proportion equation
217,867.18 : 300,686.97 = 122,381.14 : x - Step 2: Convert to fraction form
217,867.18/300,686.97 = 122,381.14/x - Step 3: Cross multiply
217,867.18x = 300,686.97 × 122,381.14 - Step 4: Simplify right side
217,867.18x = 36,798,414,171.75 - Step 5: Solve for x
x = 36,798,414,171.75/217,867.18 - Step 6: Final answer
x = 168,902.97
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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.