Finding the Fourth Proportional to 208,571.46, 312,857.12 and 75,420.62
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Solution
The fourth proportional to 208,571.46, 312,857.12 and 75,420.62 is: 113,130.90
Step by Step Solution
- Step 1: Write the proportion equation
208,571.46 : 312,857.12 = 75,420.62 : x - Step 2: Convert to fraction form
208,571.46/312,857.12 = 75,420.62/x - Step 3: Cross multiply
208,571.46x = 312,857.12 × 75,420.62 - Step 4: Simplify right side
208,571.46x = 23,595,877,961.81 - Step 5: Solve for x
x = 23,595,877,961.81/208,571.46 - Step 6: Final answer
x = 113,130.90
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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.