Finding the Fourth Proportional to 217,669.75, 300,367.78 and 122,157.99
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Solution
The fourth proportional to 217,669.75, 300,367.78 and 122,157.99 is: 168,568.78
Step by Step Solution
- Step 1: Write the proportion equation
217,669.75 : 300,367.78 = 122,157.99 : x - Step 2: Convert to fraction form
217,669.75/300,367.78 = 122,157.99/x - Step 3: Cross multiply
217,669.75x = 300,367.78 × 122,157.99 - Step 4: Simplify right side
217,669.75x = 36,692,323,654.77 - Step 5: Solve for x
x = 36,692,323,654.77/217,669.75 - Step 6: Final answer
x = 168,568.78
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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.