Finding the Fourth Proportional to 245,615.20, 368,422.80 and 133,640.80
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Solution
The fourth proportional to 245,615.20, 368,422.80 and 133,640.80 is: 200,461.20
Step by Step Solution
- Step 1: Write the proportion equation
245,615.20 : 368,422.80 = 133,640.80 : x - Step 2: Convert to fraction form
245,615.20/368,422.80 = 133,640.80/x - Step 3: Cross multiply
245,615.20x = 368,422.80 × 133,640.80 - Step 4: Simplify right side
245,615.20x = 49,236,317,730.24 - Step 5: Solve for x
x = 49,236,317,730.24/245,615.20 - Step 6: Final answer
x = 200,461.20
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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.