Finding the Fourth Proportional to 280,378.20, 420,698.61 and 122,586.24
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Solution
The fourth proportional to 280,378.20, 420,698.61 and 122,586.24 is: 183,936.77
Step by Step Solution
- Step 1: Write the proportion equation
280,378.20 : 420,698.61 = 122,586.24 : x - Step 2: Convert to fraction form
280,378.20/420,698.61 = 122,586.24/x - Step 3: Cross multiply
280,378.20x = 420,698.61 × 122,586.24 - Step 4: Simplify right side
280,378.20x = 51,571,860,773.13 - Step 5: Solve for x
x = 51,571,860,773.13/280,378.20 - Step 6: Final answer
x = 183,936.77
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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.