Finding the Fourth Proportional to 216,815.68, 324,986.28 and 111,640.96
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Solution
The fourth proportional to 216,815.68, 324,986.28 and 111,640.96 is: 167,339.28
Step by Step Solution
- Step 1: Write the proportion equation
216,815.68 : 324,986.28 = 111,640.96 : x - Step 2: Convert to fraction form
216,815.68/324,986.28 = 111,640.96/x - Step 3: Cross multiply
216,815.68x = 324,986.28 × 111,640.96 - Step 4: Simplify right side
216,815.68x = 36,281,780,286.03 - Step 5: Solve for x
x = 36,281,780,286.03/216,815.68 - Step 6: Final answer
x = 167,339.28
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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.