Finding the Fourth Proportional to 393,183.36, 542,638.08 and 218,770.88
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Solution
The fourth proportional to 393,183.36, 542,638.08 and 218,770.88 is: 301,928.88
Step by Step Solution
- Step 1: Write the proportion equation
393,183.36 : 542,638.08 = 218,770.88 : x - Step 2: Convert to fraction form
393,183.36/542,638.08 = 218,770.88/x - Step 3: Cross multiply
393,183.36x = 542,638.08 × 218,770.88 - Step 4: Simplify right side
393,183.36x = 118,713,410,283.11 - Step 5: Solve for x
x = 118,713,410,283.11/393,183.36 - Step 6: Final answer
x = 301,928.88
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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.