Finding the Fourth Proportional to 238,218.75, 328,771.08 and 137,616.75
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Solution
The fourth proportional to 238,218.75, 328,771.08 and 137,616.75 is: 189,927.99
Step by Step Solution
- Step 1: Write the proportion equation
238,218.75 : 328,771.08 = 137,616.75 : x - Step 2: Convert to fraction form
238,218.75/328,771.08 = 137,616.75/x - Step 3: Cross multiply
238,218.75x = 328,771.08 × 137,616.75 - Step 4: Simplify right side
238,218.75x = 45,244,407,523.59 - Step 5: Solve for x
x = 45,244,407,523.59/238,218.75 - Step 6: Final answer
x = 189,927.99
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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.