Finding the Fourth Proportional to 878,983.20, 1,318,474.80 and 214,135.20
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Solution
The fourth proportional to 878,983.20, 1,318,474.80 and 214,135.20 is: 321,202.80
Step by Step Solution
- Step 1: Write the proportion equation
878,983.20 : 1,318,474.80 = 214,135.20 : x - Step 2: Convert to fraction form
878,983.20/1,318,474.80 = 214,135.20/x - Step 3: Cross multiply
878,983.20x = 1,318,474.80 × 214,135.20 - Step 4: Simplify right side
878,983.20x = 282,331,864,992.96 - Step 5: Solve for x
x = 282,331,864,992.96/878,983.20 - Step 6: Final answer
x = 321,202.80
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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.