Finding the Fourth Proportional to 228,207.80, 342,311.70 and 103,791.80
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Solution
The fourth proportional to 228,207.80, 342,311.70 and 103,791.80 is: 155,687.70
Step by Step Solution
- Step 1: Write the proportion equation
228,207.80 : 342,311.70 = 103,791.80 : x - Step 2: Convert to fraction form
228,207.80/342,311.70 = 103,791.80/x - Step 3: Cross multiply
228,207.80x = 342,311.70 × 103,791.80 - Step 4: Simplify right side
228,207.80x = 35,529,147,504.06 - Step 5: Solve for x
x = 35,529,147,504.06/228,207.80 - Step 6: Final answer
x = 155,687.70
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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.