Finding the Fourth Proportional to 211,406.28, 291,738.60 and 115,912.74
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Solution
The fourth proportional to 211,406.28, 291,738.60 and 115,912.74 is: 159,958.45
Step by Step Solution
- Step 1: Write the proportion equation
211,406.28 : 291,738.60 = 115,912.74 : x - Step 2: Convert to fraction form
211,406.28/291,738.60 = 115,912.74/x - Step 3: Cross multiply
211,406.28x = 291,738.60 × 115,912.74 - Step 4: Simplify right side
211,406.28x = 33,816,220,489.76 - Step 5: Solve for x
x = 33,816,220,489.76/211,406.28 - Step 6: Final answer
x = 159,958.45
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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.