Finding the Fourth Proportional to 259,887.70, 389,845.36 and 82,408.70
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Solution
The fourth proportional to 259,887.70, 389,845.36 and 82,408.70 is: 123,617.43
Step by Step Solution
- Step 1: Write the proportion equation
259,887.70 : 389,845.36 = 82,408.70 : x - Step 2: Convert to fraction form
259,887.70/389,845.36 = 82,408.70/x - Step 3: Cross multiply
259,887.70x = 389,845.36 × 82,408.70 - Step 4: Simplify right side
259,887.70x = 32,126,649,318.63 - Step 5: Solve for x
x = 32,126,649,318.63/259,887.70 - Step 6: Final answer
x = 123,617.43
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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.