Finding the Fourth Proportional to 326,917.18, 490,375.05 and 87,031.14
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Solution
The fourth proportional to 326,917.18, 490,375.05 and 87,031.14 is: 130,546.52
Step by Step Solution
- Step 1: Write the proportion equation
326,917.18 : 490,375.05 = 87,031.14 : x - Step 2: Convert to fraction form
326,917.18/490,375.05 = 87,031.14/x - Step 3: Cross multiply
326,917.18x = 490,375.05 × 87,031.14 - Step 4: Simplify right side
326,917.18x = 42,677,899,629.06 - Step 5: Solve for x
x = 42,677,899,629.06/326,917.18 - Step 6: Final answer
x = 130,546.52
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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.