Finding the Fourth Proportional to 278,124.13, 416,938.80 and 100,591.70
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Solution
The fourth proportional to 278,124.13, 416,938.80 and 100,591.70 is: 150,798.07
Step by Step Solution
- Step 1: Write the proportion equation
278,124.13 : 416,938.80 = 100,591.70 : x - Step 2: Convert to fraction form
278,124.13/416,938.80 = 100,591.70/x - Step 3: Cross multiply
278,124.13x = 416,938.80 × 100,591.70 - Step 4: Simplify right side
278,124.13x = 41,940,582,687.96 - Step 5: Solve for x
x = 41,940,582,687.96/278,124.13 - Step 6: Final answer
x = 150,798.07
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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.