Finding the Fourth Proportional to 430,857.80, 646,286.70 and 164,481.20
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Solution
The fourth proportional to 430,857.80, 646,286.70 and 164,481.20 is: 246,721.80
Step by Step Solution
- Step 1: Write the proportion equation
430,857.80 : 646,286.70 = 164,481.20 : x - Step 2: Convert to fraction form
430,857.80/646,286.70 = 164,481.20/x - Step 3: Cross multiply
430,857.80x = 646,286.70 × 164,481.20 - Step 4: Simplify right side
430,857.80x = 106,302,011,960.04 - Step 5: Solve for x
x = 106,302,011,960.04/430,857.80 - Step 6: Final answer
x = 246,721.80
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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.