Finding the Fourth Proportional to 421,782.12, 582,040.74 and 258,388.68
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Solution
The fourth proportional to 421,782.12, 582,040.74 and 258,388.68 is: 356,564.99
Step by Step Solution
- Step 1: Write the proportion equation
421,782.12 : 582,040.74 = 258,388.68 : x - Step 2: Convert to fraction form
421,782.12/582,040.74 = 258,388.68/x - Step 3: Cross multiply
421,782.12x = 582,040.74 × 258,388.68 - Step 4: Simplify right side
421,782.12x = 150,392,738,514.82 - Step 5: Solve for x
x = 150,392,738,514.82/421,782.12 - Step 6: Final answer
x = 356,564.99
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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.