Finding the Fourth Proportional to 208,311.26, 287,469.91 and 112,817.96
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Solution
The fourth proportional to 208,311.26, 287,469.91 and 112,817.96 is: 155,688.99
Step by Step Solution
- Step 1: Write the proportion equation
208,311.26 : 287,469.91 = 112,817.96 : x - Step 2: Convert to fraction form
208,311.26/287,469.91 = 112,817.96/x - Step 3: Cross multiply
208,311.26x = 287,469.91 × 112,817.96 - Step 4: Simplify right side
208,311.26x = 32,431,768,807.58 - Step 5: Solve for x
x = 32,431,768,807.58/208,311.26 - Step 6: Final answer
x = 155,688.99
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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.