Finding the Fourth Proportional to 311,878,483.24, 430,397,381.91 and 170,747,321.62
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Solution
The fourth proportional to 311,878,483.24, 430,397,381.91 and 170,747,321.62 is: 235,634,082.32
Step by Step Solution
- Step 1: Write the proportion equation
311,878,483.24 : 430,397,381.91 = 170,747,321.62 : x - Step 2: Convert to fraction form
311,878,483.24/430,397,381.91 = 170,747,321.62/x - Step 3: Cross multiply
311,878,483.24x = 430,397,381.91 × 170,747,321.62 - Step 4: Simplify right side
311,878,483.24x = 73,489,200,193,392,752 - Step 5: Solve for x
x = 73,489,200,193,392,752/311,878,483.24 - Step 6: Final answer
x = 235,634,082.32
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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.