Finding the Fourth Proportional to 487,935.14, 673,421.21 and 281,163.31
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Solution
The fourth proportional to 487,935.14, 673,421.21 and 281,163.31 is: 388,046.11
Step by Step Solution
- Step 1: Write the proportion equation
487,935.14 : 673,421.21 = 281,163.31 : x - Step 2: Convert to fraction form
487,935.14/673,421.21 = 281,163.31/x - Step 3: Cross multiply
487,935.14x = 673,421.21 × 281,163.31 - Step 4: Simplify right side
487,935.14x = 189,341,333,338.44 - Step 5: Solve for x
x = 189,341,333,338.44/487,935.14 - Step 6: Final answer
x = 388,046.11
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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.