Finding the Fourth Proportional to 284,707.12, 427,055.28 and 85,028.08
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Solution
The fourth proportional to 284,707.12, 427,055.28 and 85,028.08 is: 127,540.51
Step by Step Solution
- Step 1: Write the proportion equation
284,707.12 : 427,055.28 = 85,028.08 : x - Step 2: Convert to fraction form
284,707.12/427,055.28 = 85,028.08/x - Step 3: Cross multiply
284,707.12x = 427,055.28 × 85,028.08 - Step 4: Simplify right side
284,707.12x = 36,311,690,512.26 - Step 5: Solve for x
x = 36,311,690,512.26/284,707.12 - Step 6: Final answer
x = 127,540.51
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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.