Finding the Fourth Proportional to 421,907.99, 582,230.90 and 228,315.56
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Solution
The fourth proportional to 421,907.99, 582,230.90 and 228,315.56 is: 315,074.32
Step by Step Solution
- Step 1: Write the proportion equation
421,907.99 : 582,230.90 = 228,315.56 : x - Step 2: Convert to fraction form
421,907.99/582,230.90 = 228,315.56/x - Step 3: Cross multiply
421,907.99x = 582,230.90 × 228,315.56 - Step 4: Simplify right side
421,907.99x = 132,932,371,642.44 - Step 5: Solve for x
x = 132,932,371,642.44/421,907.99 - Step 6: Final answer
x = 315,074.32
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1.5x scale
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.