Finding the Fourth Proportional to 438,449.69, 605,161.67 and 257,219.84
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Solution
The fourth proportional to 438,449.69, 605,161.67 and 257,219.84 is: 355,022.68
Step by Step Solution
- Step 1: Write the proportion equation
438,449.69 : 605,161.67 = 257,219.84 : x - Step 2: Convert to fraction form
438,449.69/605,161.67 = 257,219.84/x - Step 3: Cross multiply
438,449.69x = 605,161.67 × 257,219.84 - Step 4: Simplify right side
438,449.69x = 155,659,583,619.63 - Step 5: Solve for x
x = 155,659,583,619.63/438,449.69 - Step 6: Final answer
x = 355,022.68
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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.