Finding the Fourth Proportional to 422,069.70, 633,137.36 and 122,555.20
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Solution
The fourth proportional to 422,069.70, 633,137.36 and 122,555.20 is: 183,842.33
Step by Step Solution
- Step 1: Write the proportion equation
422,069.70 : 633,137.36 = 122,555.20 : x - Step 2: Convert to fraction form
422,069.70/633,137.36 = 122,555.20/x - Step 3: Cross multiply
422,069.70x = 633,137.36 × 122,555.20 - Step 4: Simplify right side
422,069.70x = 77,594,275,782.27 - Step 5: Solve for x
x = 77,594,275,782.27/422,069.70 - Step 6: Final answer
x = 183,842.33
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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.