Finding the Fourth Proportional to 339,880.74, 509,523.03 and 129,378.66
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Solution
The fourth proportional to 339,880.74, 509,523.03 and 129,378.66 is: 193,954.52
Step by Step Solution
- Step 1: Write the proportion equation
339,880.74 : 509,523.03 = 129,378.66 : x - Step 2: Convert to fraction form
339,880.74/509,523.03 = 129,378.66/x - Step 3: Cross multiply
339,880.74x = 509,523.03 × 129,378.66 - Step 4: Simplify right side
339,880.74x = 65,921,406,860.54 - Step 5: Solve for x
x = 65,921,406,860.54/339,880.74 - Step 6: Final answer
x = 193,954.52
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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.