Finding the Fourth Proportional to 339,902.42, 509,394.34 and 129,425.54
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Solution
The fourth proportional to 339,902.42, 509,394.34 and 129,425.54 is: 193,963.42
Step by Step Solution
- Step 1: Write the proportion equation
339,902.42 : 509,394.34 = 129,425.54 : x - Step 2: Convert to fraction form
339,902.42/509,394.34 = 129,425.54/x - Step 3: Cross multiply
339,902.42x = 509,394.34 × 129,425.54 - Step 4: Simplify right side
339,902.42x = 65,928,634,414.24 - Step 5: Solve for x
x = 65,928,634,414.24/339,902.42 - Step 6: Final answer
x = 193,963.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.