Finding the Fourth Proportional to 281,842.13, 389,146.26 and 181,415.09
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Solution
The fourth proportional to 281,842.13, 389,146.26 and 181,415.09 is: 250,484.21
Step by Step Solution
- Step 1: Write the proportion equation
281,842.13 : 389,146.26 = 181,415.09 : x - Step 2: Convert to fraction form
281,842.13/389,146.26 = 181,415.09/x - Step 3: Cross multiply
281,842.13x = 389,146.26 × 181,415.09 - Step 4: Simplify right side
281,842.13x = 70,597,001,835.33 - Step 5: Solve for x
x = 70,597,001,835.33/281,842.13 - Step 6: Final answer
x = 250,484.21
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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.