Finding the Fourth Proportional to 339,811.20, 509,716.80 and 118,195.20
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Solution
The fourth proportional to 339,811.20, 509,716.80 and 118,195.20 is: 177,292.80
Step by Step Solution
- Step 1: Write the proportion equation
339,811.20 : 509,716.80 = 118,195.20 : x - Step 2: Convert to fraction form
339,811.20/509,716.80 = 118,195.20/x - Step 3: Cross multiply
339,811.20x = 509,716.80 × 118,195.20 - Step 4: Simplify right side
339,811.20x = 60,246,079,119.36 - Step 5: Solve for x
x = 60,246,079,119.36/339,811.20 - Step 6: Final answer
x = 177,292.80
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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.