Finding the Fourth Proportional to 280,464.06, 386,843.99 and 189,780.11
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Solution
The fourth proportional to 280,464.06, 386,843.99 and 189,780.11 is: 261,763.65
Step by Step Solution
- Step 1: Write the proportion equation
280,464.06 : 386,843.99 = 189,780.11 : x - Step 2: Convert to fraction form
280,464.06/386,843.99 = 189,780.11/x - Step 3: Cross multiply
280,464.06x = 386,843.99 × 189,780.11 - Step 4: Simplify right side
280,464.06x = 73,415,294,975.04 - Step 5: Solve for x
x = 73,415,294,975.04/280,464.06 - Step 6: Final answer
x = 261,763.65
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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.