Finding the Fourth Proportional to 238,428.80, 357,643.20 and 212,163.20
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Solution
The fourth proportional to 238,428.80, 357,643.20 and 212,163.20 is: 318,244.80
Step by Step Solution
- Step 1: Write the proportion equation
238,428.80 : 357,643.20 = 212,163.20 : x - Step 2: Convert to fraction form
238,428.80/357,643.20 = 212,163.20/x - Step 3: Cross multiply
238,428.80x = 357,643.20 × 212,163.20 - Step 4: Simplify right side
238,428.80x = 75,878,725,770.24 - Step 5: Solve for x
x = 75,878,725,770.24/238,428.80 - Step 6: Final answer
x = 318,244.80
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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.