Finding the Fourth Proportional to 318,947,094.12, 440,147,286.49 and 172,269,378.12
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Solution
The fourth proportional to 318,947,094.12, 440,147,286.49 and 172,269,378.12 is: 237,731,902.00
Step by Step Solution
- Step 1: Write the proportion equation
318,947,094.12 : 440,147,286.49 = 172,269,378.12 : x - Step 2: Convert to fraction form
318,947,094.12/440,147,286.49 = 172,269,378.12/x - Step 3: Cross multiply
318,947,094.12x = 440,147,286.49 × 172,269,378.12 - Step 4: Simplify right side
318,947,094.12x = 75,823,899,322,669,360 - Step 5: Solve for x
x = 75,823,899,322,669,360/318,947,094.12 - Step 6: Final answer
x = 237,731,902.00
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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.