Finding the Fourth Proportional to 256,984,942.80, 385,477,403.40 and 75,232,120.08
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Solution
The fourth proportional to 256,984,942.80, 385,477,403.40 and 75,232,120.08 is: 112,848,176.96
Step by Step Solution
- Step 1: Write the proportion equation
256,984,942.80 : 385,477,403.40 = 75,232,120.08 : x - Step 2: Convert to fraction form
256,984,942.80/385,477,403.40 = 75,232,120.08/x - Step 3: Cross multiply
256,984,942.80x = 385,477,403.40 × 75,232,120.08 - Step 4: Simplify right side
256,984,942.80x = 29,000,282,300,715,396 - Step 5: Solve for x
x = 29,000,282,300,715,396/256,984,942.80 - Step 6: Final answer
x = 112,848,176.96
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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.