Finding the Fourth Proportional to 259,739.20, 388,952.70 and 207,251.20
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Solution
The fourth proportional to 259,739.20, 388,952.70 and 207,251.20 is: 310,353.28
Step by Step Solution
- Step 1: Write the proportion equation
259,739.20 : 388,952.70 = 207,251.20 : x - Step 2: Convert to fraction form
259,739.20/388,952.70 = 207,251.20/x - Step 3: Cross multiply
259,739.20x = 388,952.70 × 207,251.20 - Step 4: Simplify right side
259,739.20x = 80,610,913,818.24 - Step 5: Solve for x
x = 80,610,913,818.24/259,739.20 - Step 6: Final answer
x = 310,353.28
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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.