Finding the Fourth Proportional to 339,756.24, 509,863.90 and 129,388.70
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Solution
The fourth proportional to 339,756.24, 509,863.90 and 129,388.70 is: 194,170.47
Step by Step Solution
- Step 1: Write the proportion equation
339,756.24 : 509,863.90 = 129,388.70 : x - Step 2: Convert to fraction form
339,756.24/509,863.90 = 129,388.70/x - Step 3: Cross multiply
339,756.24x = 509,863.90 × 129,388.70 - Step 4: Simplify right side
339,756.24x = 65,970,627,197.93 - Step 5: Solve for x
x = 65,970,627,197.93/339,756.24 - Step 6: Final answer
x = 194,170.47
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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.