Finding the Fourth Proportional to 287,784,245.40, 431,676,368.10 and 201,619,944.60
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Solution
The fourth proportional to 287,784,245.40, 431,676,368.10 and 201,619,944.60 is: 302,429,916.90
Step by Step Solution
- Step 1: Write the proportion equation
287,784,245.40 : 431,676,368.10 = 201,619,944.60 : x - Step 2: Convert to fraction form
287,784,245.40/431,676,368.10 = 201,619,944.60/x - Step 3: Cross multiply
287,784,245.40x = 431,676,368.10 × 201,619,944.60 - Step 4: Simplify right side
287,784,245.40x = 87,034,565,421,451,216 - Step 5: Solve for x
x = 87,034,565,421,451,216/287,784,245.40 - Step 6: Final answer
x = 302,429,916.90
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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.