Finding the Fourth Proportional to 265,879.09, 398,895.86 and 85,960.68
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Solution
The fourth proportional to 265,879.09, 398,895.86 and 85,960.68 is: 128,965.99
Step by Step Solution
- Step 1: Write the proportion equation
265,879.09 : 398,895.86 = 85,960.68 : x - Step 2: Convert to fraction form
265,879.09/398,895.86 = 85,960.68/x - Step 3: Cross multiply
265,879.09x = 398,895.86 × 85,960.68 - Step 4: Simplify right side
265,879.09x = 34,289,359,374.78 - Step 5: Solve for x
x = 34,289,359,374.78/265,879.09 - Step 6: Final answer
x = 128,965.99
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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.