Finding the Fourth Proportional to 218,515.24, 327,814.20 and 85,387.08
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Solution
The fourth proportional to 218,515.24, 327,814.20 and 85,387.08 is: 128,096.77
Step by Step Solution
- Step 1: Write the proportion equation
218,515.24 : 327,814.20 = 85,387.08 : x - Step 2: Convert to fraction form
218,515.24/327,814.20 = 85,387.08/x - Step 3: Cross multiply
218,515.24x = 327,814.20 × 85,387.08 - Step 4: Simplify right side
218,515.24x = 27,991,097,320.54 - Step 5: Solve for x
x = 27,991,097,320.54/218,515.24 - Step 6: Final answer
x = 128,096.77
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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.