Finding the Fourth Proportional to 259,396.24, 389,130.74 and 90,877.96
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Solution
The fourth proportional to 259,396.24, 389,130.74 and 90,877.96 is: 136,329.69
Step by Step Solution
- Step 1: Write the proportion equation
259,396.24 : 389,130.74 = 90,877.96 : x - Step 2: Convert to fraction form
259,396.24/389,130.74 = 90,877.96/x - Step 3: Cross multiply
259,396.24x = 389,130.74 × 90,877.96 - Step 4: Simplify right side
259,396.24x = 35,363,407,824.49 - Step 5: Solve for x
x = 35,363,407,824.49/259,396.24 - Step 6: Final answer
x = 136,329.69
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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.