Finding the Fourth Proportional to 256,021.68, 383,986.36 and 68,989.52
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Solution
The fourth proportional to 256,021.68, 383,986.36 and 68,989.52 is: 103,471.84
Step by Step Solution
- Step 1: Write the proportion equation
256,021.68 : 383,986.36 = 68,989.52 : x - Step 2: Convert to fraction form
256,021.68/383,986.36 = 68,989.52/x - Step 3: Cross multiply
256,021.68x = 383,986.36 × 68,989.52 - Step 4: Simplify right side
256,021.68x = 26,491,034,662.95 - Step 5: Solve for x
x = 26,491,034,662.95/256,021.68 - Step 6: Final answer
x = 103,471.84
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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.