Finding the Fourth Proportional to 259,749.20, 388,967.70 and 207,261.20
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Solution
The fourth proportional to 259,749.20, 388,967.70 and 207,261.20 is: 310,368.28
Step by Step Solution
- Step 1: Write the proportion equation
259,749.20 : 388,967.70 = 207,261.20 : x - Step 2: Convert to fraction form
259,749.20/388,967.70 = 207,261.20/x - Step 3: Cross multiply
259,749.20x = 388,967.70 × 207,261.20 - Step 4: Simplify right side
259,749.20x = 80,617,912,263.24 - Step 5: Solve for x
x = 80,617,912,263.24/259,749.20 - Step 6: Final answer
x = 310,368.28
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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.