Finding the Fourth Proportional to 186,486.20, 279,729.30 and 156,961.70
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Solution
The fourth proportional to 186,486.20, 279,729.30 and 156,961.70 is: 235,442.55
Step by Step Solution
- Step 1: Write the proportion equation
186,486.20 : 279,729.30 = 156,961.70 : x - Step 2: Convert to fraction form
186,486.20/279,729.30 = 156,961.70/x - Step 3: Cross multiply
186,486.20x = 279,729.30 × 156,961.70 - Step 4: Simplify right side
186,486.20x = 43,906,786,467.81 - Step 5: Solve for x
x = 43,906,786,467.81/186,486.20 - Step 6: Final answer
x = 235,442.55
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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.