Finding the Fourth Proportional to 278,246.08, 417,046.74 and 128,171.44
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Solution
The fourth proportional to 278,246.08, 417,046.74 and 128,171.44 is: 192,108.66
Step by Step Solution
- Step 1: Write the proportion equation
278,246.08 : 417,046.74 = 128,171.44 : x - Step 2: Convert to fraction form
278,246.08/417,046.74 = 128,171.44/x - Step 3: Cross multiply
278,246.08x = 417,046.74 × 128,171.44 - Step 4: Simplify right side
278,246.08x = 53,453,481,213.11 - Step 5: Solve for x
x = 53,453,481,213.11/278,246.08 - Step 6: Final answer
x = 192,108.66
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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.