Finding the Fourth Proportional to 420,424.83, 580,199.09 and 239,163.03
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Solution
The fourth proportional to 420,424.83, 580,199.09 and 239,163.03 is: 330,052.27
Step by Step Solution
- Step 1: Write the proportion equation
420,424.83 : 580,199.09 = 239,163.03 : x - Step 2: Convert to fraction form
420,424.83/580,199.09 = 239,163.03/x - Step 3: Cross multiply
420,424.83x = 580,199.09 × 239,163.03 - Step 4: Simplify right side
420,424.83x = 138,762,171,171.83 - Step 5: Solve for x
x = 138,762,171,171.83/420,424.83 - Step 6: Final answer
x = 330,052.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.