Finding the Fourth Proportional to 287,191.10, 396,432.17 and 225,777.08
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Solution
The fourth proportional to 287,191.10, 396,432.17 and 225,777.08 is: 311,657.63
Step by Step Solution
- Step 1: Write the proportion equation
287,191.10 : 396,432.17 = 225,777.08 : x - Step 2: Convert to fraction form
287,191.10/396,432.17 = 225,777.08/x - Step 3: Cross multiply
287,191.10x = 396,432.17 × 225,777.08 - Step 4: Simplify right side
287,191.10x = 89,505,298,624.55 - Step 5: Solve for x
x = 89,505,298,624.55/287,191.10 - Step 6: Final answer
x = 311,657.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.