Finding the Fourth Proportional to 289,295.21, 399,134.49 and 187,398.74
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Solution
The fourth proportional to 289,295.21, 399,134.49 and 187,398.74 is: 258,550.08
Step by Step Solution
- Step 1: Write the proportion equation
289,295.21 : 399,134.49 = 187,398.74 : x - Step 2: Convert to fraction form
289,295.21/399,134.49 = 187,398.74/x - Step 3: Cross multiply
289,295.21x = 399,134.49 × 187,398.74 - Step 4: Simplify right side
289,295.21x = 74,797,300,516.54 - Step 5: Solve for x
x = 74,797,300,516.54/289,295.21 - Step 6: Final answer
x = 258,550.08
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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.