Finding the Fourth Proportional to 309,392.75, 426,163.37 and 218,591.09
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Solution
The fourth proportional to 309,392.75, 426,163.37 and 218,591.09 is: 301,091.46
Step by Step Solution
- Step 1: Write the proportion equation
309,392.75 : 426,163.37 = 218,591.09 : x - Step 2: Convert to fraction form
309,392.75/426,163.37 = 218,591.09/x - Step 3: Cross multiply
309,392.75x = 426,163.37 × 218,591.09 - Step 4: Simplify right side
309,392.75x = 93,155,513,435.56 - Step 5: Solve for x
x = 93,155,513,435.56/309,392.75 - Step 6: Final answer
x = 301,091.46
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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.