Finding the Fourth Proportional to 278,822.88, 417,672.99 and 128,856.65
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Solution
The fourth proportional to 278,822.88, 417,672.99 and 128,856.65 is: 193,025.55
Step by Step Solution
- Step 1: Write the proportion equation
278,822.88 : 417,672.99 = 128,856.65 : x - Step 2: Convert to fraction form
278,822.88/417,672.99 = 128,856.65/x - Step 3: Cross multiply
278,822.88x = 417,672.99 × 128,856.65 - Step 4: Simplify right side
278,822.88x = 53,819,940,198.52 - Step 5: Solve for x
x = 53,819,940,198.52/278,822.88 - Step 6: Final answer
x = 193,025.55
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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.