Finding the Fourth Proportional to 286,165.11, 394,912.49 and 157,115.49
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Solution
The fourth proportional to 286,165.11, 394,912.49 and 157,115.49 is: 216,821.92
Step by Step Solution
- Step 1: Write the proportion equation
286,165.11 : 394,912.49 = 157,115.49 : x - Step 2: Convert to fraction form
286,165.11/394,912.49 = 157,115.49/x - Step 3: Cross multiply
286,165.11x = 394,912.49 × 157,115.49 - Step 4: Simplify right side
286,165.11x = 62,046,869,373.47 - Step 5: Solve for x
x = 62,046,869,373.47/286,165.11 - Step 6: Final answer
x = 216,821.92
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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.