Finding the Fourth Proportional to 431,081.79, 646,622.68 and 131,563.94
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Solution
The fourth proportional to 431,081.79, 646,622.68 and 131,563.94 is: 197,345.90
Step by Step Solution
- Step 1: Write the proportion equation
431,081.79 : 646,622.68 = 131,563.94 : x - Step 2: Convert to fraction form
431,081.79/646,622.68 = 131,563.94/x - Step 3: Cross multiply
431,081.79x = 646,622.68 × 131,563.94 - Step 4: Simplify right side
431,081.79x = 85,072,224,241.05 - Step 5: Solve for x
x = 85,072,224,241.05/431,081.79 - Step 6: Final answer
x = 197,345.90
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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.