Finding the Fourth Proportional to 263,631.70, 363,809.79 and 142,770.18
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Solution
The fourth proportional to 263,631.70, 363,809.79 and 142,770.18 is: 197,021.79
Step by Step Solution
- Step 1: Write the proportion equation
263,631.70 : 363,809.79 = 142,770.18 : x - Step 2: Convert to fraction form
263,631.70/363,809.79 = 142,770.18/x - Step 3: Cross multiply
263,631.70x = 363,809.79 × 142,770.18 - Step 4: Simplify right side
263,631.70x = 51,941,189,204.06 - Step 5: Solve for x
x = 51,941,189,204.06/263,631.70 - Step 6: Final answer
x = 197,021.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.