Finding the Fourth Proportional to 259,727.20, 389,590.80 and 207,239.20
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Solution
The fourth proportional to 259,727.20, 389,590.80 and 207,239.20 is: 310,858.80
Step by Step Solution
- Step 1: Write the proportion equation
259,727.20 : 389,590.80 = 207,239.20 : x - Step 2: Convert to fraction form
259,727.20/389,590.80 = 207,239.20/x - Step 3: Cross multiply
259,727.20x = 389,590.80 × 207,239.20 - Step 4: Simplify right side
259,727.20x = 80,738,485,719.36 - Step 5: Solve for x
x = 80,738,485,719.36/259,727.20 - Step 6: Final answer
x = 310,858.80
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1.5x scale
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.