Finding the Fourth Proportional to 412,879.20, 619,318.80 and 132,424.80
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Solution
The fourth proportional to 412,879.20, 619,318.80 and 132,424.80 is: 198,637.20
Step by Step Solution
- Step 1: Write the proportion equation
412,879.20 : 619,318.80 = 132,424.80 : x - Step 2: Convert to fraction form
412,879.20/619,318.80 = 132,424.80/x - Step 3: Cross multiply
412,879.20x = 619,318.80 × 132,424.80 - Step 4: Simplify right side
412,879.20x = 82,013,168,226.24 - Step 5: Solve for x
x = 82,013,168,226.24/412,879.20 - Step 6: Final answer
x = 198,637.20
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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.