Finding the Fourth Proportional to 393,163.20, 589,615.20 and 143,812.80
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Solution
The fourth proportional to 393,163.20, 589,615.20 and 143,812.80 is: 215,671.79
Step by Step Solution
- Step 1: Write the proportion equation
393,163.20 : 589,615.20 = 143,812.80 : x - Step 2: Convert to fraction form
393,163.20/589,615.20 = 143,812.80/x - Step 3: Cross multiply
393,163.20x = 589,615.20 × 143,812.80 - Step 4: Simplify right side
393,163.20x = 84,794,212,834.56 - Step 5: Solve for x
x = 84,794,212,834.56/393,163.20 - Step 6: Final answer
x = 215,671.79
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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.