Finding the Fourth Proportional to 289,751,207.80, 434,626,811.70 and 74,340,455.80
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Solution
The fourth proportional to 289,751,207.80, 434,626,811.70 and 74,340,455.80 is: 111,510,683.70
Step by Step Solution
- Step 1: Write the proportion equation
289,751,207.80 : 434,626,811.70 = 74,340,455.80 : x - Step 2: Convert to fraction form
289,751,207.80/434,626,811.70 = 74,340,455.80/x - Step 3: Cross multiply
289,751,207.80x = 434,626,811.70 × 74,340,455.80 - Step 4: Simplify right side
289,751,207.80x = 32,310,355,284,678,772 - Step 5: Solve for x
x = 32,310,355,284,678,772/289,751,207.80 - Step 6: Final answer
x = 111,510,683.70
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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.