Finding the Fourth Proportional to 259,879.91, 389,833.63 and 72,905.99
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Solution
The fourth proportional to 259,879.91, 389,833.63 and 72,905.99 is: 109,362.84
Step by Step Solution
- Step 1: Write the proportion equation
259,879.91 : 389,833.63 = 72,905.99 : x - Step 2: Convert to fraction form
259,879.91/389,833.63 = 72,905.99/x - Step 3: Cross multiply
259,879.91x = 389,833.63 × 72,905.99 - Step 4: Simplify right side
259,879.91x = 28,421,204,599.01 - Step 5: Solve for x
x = 28,421,204,599.01/259,879.91 - Step 6: Final answer
x = 109,362.84
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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.