Finding the Fourth Proportional to 397,170.76, 548,359.58 and 305,126.12
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Solution
The fourth proportional to 397,170.76, 548,359.58 and 305,126.12 is: 421,276.81
Step by Step Solution
- Step 1: Write the proportion equation
397,170.76 : 548,359.58 = 305,126.12 : x - Step 2: Convert to fraction form
397,170.76/548,359.58 = 305,126.12/x - Step 3: Cross multiply
397,170.76x = 548,359.58 × 305,126.12 - Step 4: Simplify right side
397,170.76x = 167,318,831,010.23 - Step 5: Solve for x
x = 167,318,831,010.23/397,170.76 - Step 6: Final answer
x = 421,276.81
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1.5x scale
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.