Finding the Fourth Proportional to 212,319.92, 318,480.12 and 54,549.68
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Solution
The fourth proportional to 212,319.92, 318,480.12 and 54,549.68 is: 81,824.58
Step by Step Solution
- Step 1: Write the proportion equation
212,319.92 : 318,480.12 = 54,549.68 : x - Step 2: Convert to fraction form
212,319.92/318,480.12 = 54,549.68/x - Step 3: Cross multiply
212,319.92x = 318,480.12 × 54,549.68 - Step 4: Simplify right side
212,319.92x = 17,372,988,632.36 - Step 5: Solve for x
x = 17,372,988,632.36/212,319.92 - Step 6: Final answer
x = 81,824.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.