Finding the Fourth Proportional to 258,949.80, 387,841.50 and 132,628.68
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Solution
The fourth proportional to 258,949.80, 387,841.50 and 132,628.68 is: 198,644.32
Step by Step Solution
- Step 1: Write the proportion equation
258,949.80 : 387,841.50 = 132,628.68 : x - Step 2: Convert to fraction form
258,949.80/387,841.50 = 132,628.68/x - Step 3: Cross multiply
258,949.80x = 387,841.50 × 132,628.68 - Step 4: Simplify right side
258,949.80x = 51,438,906,194.22 - Step 5: Solve for x
x = 51,438,906,194.22/258,949.80 - Step 6: Final answer
x = 198,644.32
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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.