Finding the Fourth Proportional to 312,135.73, 430,745.92 and 168,898.30
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Solution
The fourth proportional to 312,135.73, 430,745.92 and 168,898.30 is: 233,078.90
Step by Step Solution
- Step 1: Write the proportion equation
312,135.73 : 430,745.92 = 168,898.30 : x - Step 2: Convert to fraction form
312,135.73/430,745.92 = 168,898.30/x - Step 3: Cross multiply
312,135.73x = 430,745.92 × 168,898.30 - Step 4: Simplify right side
312,135.73x = 72,752,253,619.94 - Step 5: Solve for x
x = 72,752,253,619.94/312,135.73 - Step 6: Final answer
x = 233,078.90
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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.