Finding the Fourth Proportional to 259,723.67, 389,439.70 and 91,197.09
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Solution
The fourth proportional to 259,723.67, 389,439.70 and 91,197.09 is: 136,744.44
Step by Step Solution
- Step 1: Write the proportion equation
259,723.67 : 389,439.70 = 91,197.09 : x - Step 2: Convert to fraction form
259,723.67/389,439.70 = 91,197.09/x - Step 3: Cross multiply
259,723.67x = 389,439.70 × 91,197.09 - Step 4: Simplify right side
259,723.67x = 35,515,767,142.48 - Step 5: Solve for x
x = 35,515,767,142.48/259,723.67 - Step 6: Final answer
x = 136,744.44
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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.