Finding the Fourth Proportional to 201,971.76, 278,618.60 and 154,142.07
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Solution
The fourth proportional to 201,971.76, 278,618.60 and 154,142.07 is: 212,637.88
Step by Step Solution
- Step 1: Write the proportion equation
201,971.76 : 278,618.60 = 154,142.07 : x - Step 2: Convert to fraction form
201,971.76/278,618.60 = 154,142.07/x - Step 3: Cross multiply
201,971.76x = 278,618.60 × 154,142.07 - Step 4: Simplify right side
201,971.76x = 42,946,846,469.92 - Step 5: Solve for x
x = 42,946,846,469.92/201,971.76 - Step 6: Final answer
x = 212,637.88
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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.