Finding the Fourth Proportional to 419,542.14, 628,891.86 and 135,023.61
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Solution
The fourth proportional to 419,542.14, 628,891.86 and 135,023.61 is: 202,399.80
Step by Step Solution
- Step 1: Write the proportion equation
419,542.14 : 628,891.86 = 135,023.61 : x - Step 2: Convert to fraction form
419,542.14/628,891.86 = 135,023.61/x - Step 3: Cross multiply
419,542.14x = 628,891.86 × 135,023.61 - Step 4: Simplify right side
419,542.14x = 84,915,245,417.24 - Step 5: Solve for x
x = 84,915,245,417.24/419,542.14 - Step 6: Final answer
x = 202,399.80
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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.