Finding the Fourth Proportional to 323,138.12, 445,640.28 and 202,290.40
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Solution
The fourth proportional to 323,138.12, 445,640.28 and 202,290.40 is: 278,979.00
Step by Step Solution
- Step 1: Write the proportion equation
323,138.12 : 445,640.28 = 202,290.40 : x - Step 2: Convert to fraction form
323,138.12/445,640.28 = 202,290.40/x - Step 3: Cross multiply
323,138.12x = 445,640.28 × 202,290.40 - Step 4: Simplify right side
323,138.12x = 90,148,750,497.31 - Step 5: Solve for x
x = 90,148,750,497.31/323,138.12 - Step 6: Final answer
x = 278,979.00
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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.