Finding the Fourth Proportional to 280,857.64, 420,913.86 and 122,914.12
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Solution
The fourth proportional to 280,857.64, 420,913.86 and 122,914.12 is: 184,208.12
Step by Step Solution
- Step 1: Write the proportion equation
280,857.64 : 420,913.86 = 122,914.12 : x - Step 2: Convert to fraction form
280,857.64/420,913.86 = 122,914.12/x - Step 3: Cross multiply
280,857.64x = 420,913.86 × 122,914.12 - Step 4: Simplify right side
280,857.64x = 51,736,256,697.70 - Step 5: Solve for x
x = 51,736,256,697.70/280,857.64 - Step 6: Final answer
x = 184,208.12
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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.