Finding the Fourth Proportional to 263,130.05, 394,719.68 and 85,589.39
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Solution
The fourth proportional to 263,130.05, 394,719.68 and 85,589.39 is: 128,392.09
Step by Step Solution
- Step 1: Write the proportion equation
263,130.05 : 394,719.68 = 85,589.39 : x - Step 2: Convert to fraction form
263,130.05/394,719.68 = 85,589.39/x - Step 3: Cross multiply
263,130.05x = 394,719.68 × 85,589.39 - Step 4: Simplify right side
263,130.05x = 33,783,817,832.97 - Step 5: Solve for x
x = 33,783,817,832.97/263,130.05 - Step 6: Final answer
x = 128,392.09
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1.5x scale
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.