Finding the Fourth Proportional to 215,544.12, 323,316.18 and 65,785.20
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Solution
The fourth proportional to 215,544.12, 323,316.18 and 65,785.20 is: 98,677.80
Step by Step Solution
- Step 1: Write the proportion equation
215,544.12 : 323,316.18 = 65,785.20 : x - Step 2: Convert to fraction form
215,544.12/323,316.18 = 65,785.20/x - Step 3: Cross multiply
215,544.12x = 323,316.18 × 65,785.20 - Step 4: Simplify right side
215,544.12x = 21,269,419,564.54 - Step 5: Solve for x
x = 21,269,419,564.54/215,544.12 - Step 6: Final answer
x = 98,677.80
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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.