Finding the Fourth Proportional to 201,884.49, 278,558.87 and 138,199.05
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Solution
The fourth proportional to 201,884.49, 278,558.87 and 138,199.05 is: 190,686.12
Step by Step Solution
- Step 1: Write the proportion equation
201,884.49 : 278,558.87 = 138,199.05 : x - Step 2: Convert to fraction form
201,884.49/278,558.87 = 138,199.05/x - Step 3: Cross multiply
201,884.49x = 278,558.87 × 138,199.05 - Step 4: Simplify right side
201,884.49x = 38,496,570,512.08 - Step 5: Solve for x
x = 38,496,570,512.08/201,884.49 - Step 6: Final answer
x = 190,686.12
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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.