Finding the Fourth Proportional to 323,731.20, 485,596.80 and 102,115.20
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Solution
The fourth proportional to 323,731.20, 485,596.80 and 102,115.20 is: 153,172.80
Step by Step Solution
- Step 1: Write the proportion equation
323,731.20 : 485,596.80 = 102,115.20 : x - Step 2: Convert to fraction form
323,731.20/485,596.80 = 102,115.20/x - Step 3: Cross multiply
323,731.20x = 485,596.80 × 102,115.20 - Step 4: Simplify right side
323,731.20x = 49,586,814,351.36 - Step 5: Solve for x
x = 49,586,814,351.36/323,731.20 - Step 6: Final answer
x = 153,172.80
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1.5x scale
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.