Finding the Fourth Proportional to 259,745.20, 388,961.70 and 207,257.20
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Solution
The fourth proportional to 259,745.20, 388,961.70 and 207,257.20 is: 310,362.28
Step by Step Solution
- Step 1: Write the proportion equation
259,745.20 : 388,961.70 = 207,257.20 : x - Step 2: Convert to fraction form
259,745.20/388,961.70 = 207,257.20/x - Step 3: Cross multiply
259,745.20x = 388,961.70 × 207,257.20 - Step 4: Simplify right side
259,745.20x = 80,615,112,849.24 - Step 5: Solve for x
x = 80,615,112,849.24/259,745.20 - Step 6: Final answer
x = 310,362.28
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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.