Finding the Fourth Proportional to 378,782.76, 568,228.14 and 125,979.96
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Solution
The fourth proportional to 378,782.76, 568,228.14 and 125,979.96 is: 188,987.90
Step by Step Solution
- Step 1: Write the proportion equation
378,782.76 : 568,228.14 = 125,979.96 : x - Step 2: Convert to fraction form
378,782.76/568,228.14 = 125,979.96/x - Step 3: Cross multiply
378,782.76x = 568,228.14 × 125,979.96 - Step 4: Simplify right side
378,782.76x = 71,585,358,348.07 - Step 5: Solve for x
x = 71,585,358,348.07/378,782.76 - Step 6: Final answer
x = 188,987.90
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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.