Finding the Fourth Proportional to 378,235.27, 567,402.09 and 138,311.81
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Solution
The fourth proportional to 378,235.27, 567,402.09 and 138,311.81 is: 207,485.70
Step by Step Solution
- Step 1: Write the proportion equation
378,235.27 : 567,402.09 = 138,311.81 : x - Step 2: Convert to fraction form
378,235.27/567,402.09 = 138,311.81/x - Step 3: Cross multiply
378,235.27x = 567,402.09 × 138,311.81 - Step 4: Simplify right side
378,235.27x = 78,478,410,065.68 - Step 5: Solve for x
x = 78,478,410,065.68/378,235.27 - Step 6: Final answer
x = 207,485.70
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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.