Finding the Fourth Proportional to 422,163.20, 634,166.40 and 297,747.20
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Solution
The fourth proportional to 422,163.20, 634,166.40 and 297,747.20 is: 447,270.79
Step by Step Solution
- Step 1: Write the proportion equation
422,163.20 : 634,166.40 = 297,747.20 : x - Step 2: Convert to fraction form
422,163.20/634,166.40 = 297,747.20/x - Step 3: Cross multiply
422,163.20x = 634,166.40 × 297,747.20 - Step 4: Simplify right side
422,163.20x = 188,821,269,934.08 - Step 5: Solve for x
x = 188,821,269,934.08/422,163.20 - Step 6: Final answer
x = 447,270.79
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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.