Finding the Fourth Proportional to 280,775.62, 421,139.77 and 120,845.09
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Solution
The fourth proportional to 280,775.62, 421,139.77 and 120,845.09 is: 181,257.45
Step by Step Solution
- Step 1: Write the proportion equation
280,775.62 : 421,139.77 = 120,845.09 : x - Step 2: Convert to fraction form
280,775.62/421,139.77 = 120,845.09/x - Step 3: Cross multiply
280,775.62x = 421,139.77 × 120,845.09 - Step 4: Simplify right side
280,775.62x = 50,892,673,408.23 - Step 5: Solve for x
x = 50,892,673,408.23/280,775.62 - Step 6: Final answer
x = 181,257.45
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1.5x scale
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.