Finding the Fourth Proportional to 280,774.62, 421,138.27 and 120,844.09
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Solution
The fourth proportional to 280,774.62, 421,138.27 and 120,844.09 is: 181,255.95
Step by Step Solution
- Step 1: Write the proportion equation
280,774.62 : 421,138.27 = 120,844.09 : x - Step 2: Convert to fraction form
280,774.62/421,138.27 = 120,844.09/x - Step 3: Cross multiply
280,774.62x = 421,138.27 × 120,844.09 - Step 4: Simplify right side
280,774.62x = 50,892,071,679.80 - Step 5: Solve for x
x = 50,892,071,679.80/280,774.62 - Step 6: Final answer
x = 181,255.95
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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.