Finding the Fourth Proportional to 311,474.80, 437,245.70 and 311,474.80
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Solution
The fourth proportional to 311,474.80, 437,245.70 and 311,474.80 is: 437,245.70
Step by Step Solution
- Step 1: Write the proportion equation
311,474.80 : 437,245.70 = 311,474.80 : x - Step 2: Convert to fraction form
311,474.80/437,245.70 = 311,474.80/x - Step 3: Cross multiply
311,474.80x = 437,245.70 × 311,474.80 - Step 4: Simplify right side
311,474.80x = 136,191,016,958.36 - Step 5: Solve for x
x = 136,191,016,958.36/311,474.80 - Step 6: Final answer
x = 437,245.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.