Finding the Fourth Proportional to 231,964.21, 320,105.39 and 135,162.07
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Solution
The fourth proportional to 231,964.21, 320,105.39 and 135,162.07 is: 186,520.61
Step by Step Solution
- Step 1: Write the proportion equation
231,964.21 : 320,105.39 = 135,162.07 : x - Step 2: Convert to fraction form
231,964.21/320,105.39 = 135,162.07/x - Step 3: Cross multiply
231,964.21x = 320,105.39 × 135,162.07 - Step 4: Simplify right side
231,964.21x = 43,266,106,454.75 - Step 5: Solve for x
x = 43,266,106,454.75/231,964.21 - Step 6: Final answer
x = 186,520.61
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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.