Finding the Fourth Proportional to 398,274.12, 550,317.39 and 318,361.14
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Solution
The fourth proportional to 398,274.12, 550,317.39 and 318,361.14 is: 439,897.20
Step by Step Solution
- Step 1: Write the proportion equation
398,274.12 : 550,317.39 = 318,361.14 : x - Step 2: Convert to fraction form
398,274.12/550,317.39 = 318,361.14/x - Step 3: Cross multiply
398,274.12x = 550,317.39 × 318,361.14 - Step 4: Simplify right side
398,274.12x = 175,199,671,642.23 - Step 5: Solve for x
x = 175,199,671,642.23/398,274.12 - Step 6: Final answer
x = 439,897.20
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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.