Finding the Fourth Proportional to 285,213.64, 393,599.49 and 156,149.96
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Solution
The fourth proportional to 285,213.64, 393,599.49 and 156,149.96 is: 215,489.50
Step by Step Solution
- Step 1: Write the proportion equation
285,213.64 : 393,599.49 = 156,149.96 : x - Step 2: Convert to fraction form
285,213.64/393,599.49 = 156,149.96/x - Step 3: Cross multiply
285,213.64x = 393,599.49 × 156,149.96 - Step 4: Simplify right side
285,213.64x = 61,460,544,279.96 - Step 5: Solve for x
x = 61,460,544,279.96/285,213.64 - Step 6: Final answer
x = 215,489.50
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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.