Finding the Fourth Proportional to 398,851.20, 598,276.80 and 338,716.80
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Solution
The fourth proportional to 398,851.20, 598,276.80 and 338,716.80 is: 508,075.20
Step by Step Solution
- Step 1: Write the proportion equation
398,851.20 : 598,276.80 = 338,716.80 : x - Step 2: Convert to fraction form
398,851.20/598,276.80 = 338,716.80/x - Step 3: Cross multiply
398,851.20x = 598,276.80 × 338,716.80 - Step 4: Simplify right side
398,851.20x = 202,646,403,210.24 - Step 5: Solve for x
x = 202,646,403,210.24/398,851.20 - Step 6: Final answer
x = 508,075.20
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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.