Finding the Fourth Proportional to 283,107.75, 390,691.47 and 155,786.09
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Solution
The fourth proportional to 283,107.75, 390,691.47 and 155,786.09 is: 214,986.33
Step by Step Solution
- Step 1: Write the proportion equation
283,107.75 : 390,691.47 = 155,786.09 : x - Step 2: Convert to fraction form
283,107.75/390,691.47 = 155,786.09/x - Step 3: Cross multiply
283,107.75x = 390,691.47 × 155,786.09 - Step 4: Simplify right side
283,107.75x = 60,864,295,728.72 - Step 5: Solve for x
x = 60,864,295,728.72/283,107.75 - Step 6: Final answer
x = 214,986.33
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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.