Finding the Fourth Proportional to 321,639.60, 482,460.64 and 134,519.84
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Solution
The fourth proportional to 321,639.60, 482,460.64 and 134,519.84 is: 201,780.28
Step by Step Solution
- Step 1: Write the proportion equation
321,639.60 : 482,460.64 = 134,519.84 : x - Step 2: Convert to fraction form
321,639.60/482,460.64 = 134,519.84/x - Step 3: Cross multiply
321,639.60x = 482,460.64 × 134,519.84 - Step 4: Simplify right side
321,639.60x = 64,900,528,099.10 - Step 5: Solve for x
x = 64,900,528,099.10/321,639.60 - Step 6: Final answer
x = 201,780.28
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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.