Finding the Fourth Proportional to 265,135.79, 397,765.96 and 87,642.80
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Solution
The fourth proportional to 265,135.79, 397,765.96 and 87,642.80 is: 131,484.78
Step by Step Solution
- Step 1: Write the proportion equation
265,135.79 : 397,765.96 = 87,642.80 : x - Step 2: Convert to fraction form
265,135.79/397,765.96 = 87,642.80/x - Step 3: Cross multiply
265,135.79x = 397,765.96 × 87,642.80 - Step 4: Simplify right side
265,135.79x = 34,861,320,644.06 - Step 5: Solve for x
x = 34,861,320,644.06/265,135.79 - Step 6: Final answer
x = 131,484.78
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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.