Finding the Fourth Proportional to 391,974.72, 587,672.64 and 125,581.12
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Solution
The fourth proportional to 391,974.72, 587,672.64 and 125,581.12 is: 188,278.95
Step by Step Solution
- Step 1: Write the proportion equation
391,974.72 : 587,672.64 = 125,581.12 : x - Step 2: Convert to fraction form
391,974.72/587,672.64 = 125,581.12/x - Step 3: Cross multiply
391,974.72x = 587,672.64 × 125,581.12 - Step 4: Simplify right side
391,974.72x = 73,800,588,324.56 - Step 5: Solve for x
x = 73,800,588,324.56/391,974.72 - Step 6: Final answer
x = 188,278.95
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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.