Finding the Fourth Proportional to 285,708.40, 394,197.74 and 225,090.87
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Solution
The fourth proportional to 285,708.40, 394,197.74 and 225,090.87 is: 310,562.49
Step by Step Solution
- Step 1: Write the proportion equation
285,708.40 : 394,197.74 = 225,090.87 : x - Step 2: Convert to fraction form
285,708.40/394,197.74 = 225,090.87/x - Step 3: Cross multiply
285,708.40x = 394,197.74 × 225,090.87 - Step 4: Simplify right side
285,708.40x = 88,730,310,489.03 - Step 5: Solve for x
x = 88,730,310,489.03/285,708.40 - Step 6: Final answer
x = 310,562.49
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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.