Finding the Fourth Proportional to 280,815.99, 421,297.76 and 100,919.58
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Solution
The fourth proportional to 280,815.99, 421,297.76 and 100,919.58 is: 151,405.88
Step by Step Solution
- Step 1: Write the proportion equation
280,815.99 : 421,297.76 = 100,919.58 : x - Step 2: Convert to fraction form
280,815.99/421,297.76 = 100,919.58/x - Step 3: Cross multiply
280,815.99x = 421,297.76 × 100,919.58 - Step 4: Simplify right side
280,815.99x = 42,517,192,994.14 - Step 5: Solve for x
x = 42,517,192,994.14/280,815.99 - Step 6: Final answer
x = 151,405.88
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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.