Finding the Fourth Proportional to 261,919.64, 392,616.42 and 84,296.12
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Solution
The fourth proportional to 261,919.64, 392,616.42 and 84,296.12 is: 126,359.52
Step by Step Solution
- Step 1: Write the proportion equation
261,919.64 : 392,616.42 = 84,296.12 : x - Step 2: Convert to fraction form
261,919.64/392,616.42 = 84,296.12/x - Step 3: Cross multiply
261,919.64x = 392,616.42 × 84,296.12 - Step 4: Simplify right side
261,919.64x = 33,096,040,854.29 - Step 5: Solve for x
x = 33,096,040,854.29/261,919.64 - Step 6: Final answer
x = 126,359.52
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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.