Finding the Fourth Proportional to 396,636.63, 547,408.58 and 245,756.31
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Solution
The fourth proportional to 396,636.63, 547,408.58 and 245,756.31 is: 339,174.70
Step by Step Solution
- Step 1: Write the proportion equation
396,636.63 : 547,408.58 = 245,756.31 : x - Step 2: Convert to fraction form
396,636.63/547,408.58 = 245,756.31/x - Step 3: Cross multiply
396,636.63x = 547,408.58 × 245,756.31 - Step 4: Simplify right side
396,636.63x = 134,529,111,454.36 - Step 5: Solve for x
x = 134,529,111,454.36/396,636.63 - Step 6: Final answer
x = 339,174.70
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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.