Finding the Fourth Proportional to 280,164.11, 420,249.04 and 80,483.99
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Solution
The fourth proportional to 280,164.11, 420,249.04 and 80,483.99 is: 120,726.80
Step by Step Solution
- Step 1: Write the proportion equation
280,164.11 : 420,249.04 = 80,483.99 : x - Step 2: Convert to fraction form
280,164.11/420,249.04 = 80,483.99/x - Step 3: Cross multiply
280,164.11x = 420,249.04 × 80,483.99 - Step 4: Simplify right side
280,164.11x = 33,823,317,230.41 - Step 5: Solve for x
x = 33,823,317,230.41/280,164.11 - Step 6: Final answer
x = 120,726.80
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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.