Finding the Fourth Proportional to 284,751.12, 392,940.84 and 157,419.12
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Solution
The fourth proportional to 284,751.12, 392,940.84 and 157,419.12 is: 217,229.70
Step by Step Solution
- Step 1: Write the proportion equation
284,751.12 : 392,940.84 = 157,419.12 : x - Step 2: Convert to fraction form
284,751.12/392,940.84 = 157,419.12/x - Step 3: Cross multiply
284,751.12x = 392,940.84 × 157,419.12 - Step 4: Simplify right side
284,751.12x = 61,856,401,244.86 - Step 5: Solve for x
x = 61,856,401,244.86/284,751.12 - Step 6: Final answer
x = 217,229.70
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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.