Finding the Fourth Proportional to 309,481.37, 427,160.26 and 188,689.26
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Solution
The fourth proportional to 309,481.37, 427,160.26 and 188,689.26 is: 260,437.50
Step by Step Solution
- Step 1: Write the proportion equation
309,481.37 : 427,160.26 = 188,689.26 : x - Step 2: Convert to fraction form
309,481.37/427,160.26 = 188,689.26/x - Step 3: Cross multiply
309,481.37x = 427,160.26 × 188,689.26 - Step 4: Simplify right side
309,481.37x = 80,600,553,360.81 - Step 5: Solve for x
x = 80,600,553,360.81/309,481.37 - Step 6: Final answer
x = 260,437.50
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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.