Finding the Fourth Proportional to 321,395.36, 482,095.92 and 84,771.68
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Solution
The fourth proportional to 321,395.36, 482,095.92 and 84,771.68 is: 127,158.28
Step by Step Solution
- Step 1: Write the proportion equation
321,395.36 : 482,095.92 = 84,771.68 : x - Step 2: Convert to fraction form
321,395.36/482,095.92 = 84,771.68/x - Step 3: Cross multiply
321,395.36x = 482,095.92 × 84,771.68 - Step 4: Simplify right side
321,395.36x = 40,868,081,059.55 - Step 5: Solve for x
x = 40,868,081,059.55/321,395.36 - Step 6: Final answer
x = 127,158.28
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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.