Finding the Fourth Proportional to 394,781.38, 592,110.23 and 128,540.09
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Solution
The fourth proportional to 394,781.38, 592,110.23 and 128,540.09 is: 192,790.00
Step by Step Solution
- Step 1: Write the proportion equation
394,781.38 : 592,110.23 = 128,540.09 : x - Step 2: Convert to fraction form
394,781.38/592,110.23 = 128,540.09/x - Step 3: Cross multiply
394,781.38x = 592,110.23 × 128,540.09 - Step 4: Simplify right side
394,781.38x = 76,109,903,091.70 - Step 5: Solve for x
x = 76,109,903,091.70/394,781.38 - Step 6: Final answer
x = 192,790.00
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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.