Finding the Fourth Proportional to 235,211.20, 352,816.80 and 212,660.80
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Solution
The fourth proportional to 235,211.20, 352,816.80 and 212,660.80 is: 318,991.20
Step by Step Solution
- Step 1: Write the proportion equation
235,211.20 : 352,816.80 = 212,660.80 : x - Step 2: Convert to fraction form
235,211.20/352,816.80 = 212,660.80/x - Step 3: Cross multiply
235,211.20x = 352,816.80 × 212,660.80 - Step 4: Simplify right side
235,211.20x = 75,030,302,941.44 - Step 5: Solve for x
x = 75,030,302,941.44/235,211.20 - Step 6: Final answer
x = 318,991.20
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1.5x scale
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.