Finding the Fourth Proportional to 395,091.13, 545,221.61 and 213,799.09
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Solution
The fourth proportional to 395,091.13, 545,221.61 and 213,799.09 is: 295,040.50
Step by Step Solution
- Step 1: Write the proportion equation
395,091.13 : 545,221.61 = 213,799.09 : x - Step 2: Convert to fraction form
395,091.13/545,221.61 = 213,799.09/x - Step 3: Cross multiply
395,091.13x = 545,221.61 × 213,799.09 - Step 4: Simplify right side
395,091.13x = 116,567,882,997.34 - Step 5: Solve for x
x = 116,567,882,997.34/395,091.13 - Step 6: Final answer
x = 295,040.50
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1.5x scale
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.