Finding the Fourth Proportional to 311,879,096.42, 430,398,249.76 and 170,747,962.34
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Solution
The fourth proportional to 311,879,096.42, 430,398,249.76 and 170,747,962.34 is: 235,634,978.37
Step by Step Solution
- Step 1: Write the proportion equation
311,879,096.42 : 430,398,249.76 = 170,747,962.34 : x - Step 2: Convert to fraction form
311,879,096.42/430,398,249.76 = 170,747,962.34/x - Step 3: Cross multiply
311,879,096.42x = 430,398,249.76 × 170,747,962.34 - Step 4: Simplify right side
311,879,096.42x = 73,489,624,140,368,656 - Step 5: Solve for x
x = 73,489,624,140,368,656/311,879,096.42 - Step 6: Final answer
x = 235,634,978.37
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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.