Finding the Fourth Proportional to 485,398.24, 669,701.14 and 281,408.46
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Solution
The fourth proportional to 485,398.24, 669,701.14 and 281,408.46 is: 388,257.62
Step by Step Solution
- Step 1: Write the proportion equation
485,398.24 : 669,701.14 = 281,408.46 : x - Step 2: Convert to fraction form
485,398.24/669,701.14 = 281,408.46/x - Step 3: Cross multiply
485,398.24x = 669,701.14 × 281,408.46 - Step 4: Simplify right side
485,398.24x = 188,459,568,912.22 - Step 5: Solve for x
x = 188,459,568,912.22/485,398.24 - Step 6: Final answer
x = 388,257.62
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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.