Finding the Fourth Proportional to 391,419.44, 587,128.08 and 110,939.12
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Solution
The fourth proportional to 391,419.44, 587,128.08 and 110,939.12 is: 166,408.37
Step by Step Solution
- Step 1: Write the proportion equation
391,419.44 : 587,128.08 = 110,939.12 : x - Step 2: Convert to fraction form
391,419.44/587,128.08 = 110,939.12/x - Step 3: Cross multiply
391,419.44x = 587,128.08 × 110,939.12 - Step 4: Simplify right side
391,419.44x = 65,135,472,522.49 - Step 5: Solve for x
x = 65,135,472,522.49/391,419.44 - Step 6: Final answer
x = 166,408.37
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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.