Finding the Fourth Proportional to 259,487.80, 389,231.70 and 69,947.80
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Solution
The fourth proportional to 259,487.80, 389,231.70 and 69,947.80 is: 104,921.70
Step by Step Solution
- Step 1: Write the proportion equation
259,487.80 : 389,231.70 = 69,947.80 : x - Step 2: Convert to fraction form
259,487.80/389,231.70 = 69,947.80/x - Step 3: Cross multiply
259,487.80x = 389,231.70 × 69,947.80 - Step 4: Simplify right side
259,487.80x = 27,225,901,105.26 - Step 5: Solve for x
x = 27,225,901,105.26/259,487.80 - Step 6: Final answer
x = 104,921.70
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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.