Finding the Fourth Proportional to 396,707.20, 547,669.44 and 305,863.84
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Solution
The fourth proportional to 396,707.20, 547,669.44 and 305,863.84 is: 422,256.71
Step by Step Solution
- Step 1: Write the proportion equation
396,707.20 : 547,669.44 = 305,863.84 : x - Step 2: Convert to fraction form
396,707.20/547,669.44 = 305,863.84/x - Step 3: Cross multiply
396,707.20x = 547,669.44 × 305,863.84 - Step 4: Simplify right side
396,707.20x = 167,512,277,969.05 - Step 5: Solve for x
x = 167,512,277,969.05/396,707.20 - Step 6: Final answer
x = 422,256.71
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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.