Finding the Fourth Proportional to 278,467.20, 417,700.80 and 68,107.20
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Solution
The fourth proportional to 278,467.20, 417,700.80 and 68,107.20 is: 102,160.80
Step by Step Solution
- Step 1: Write the proportion equation
278,467.20 : 417,700.80 = 68,107.20 : x - Step 2: Convert to fraction form
278,467.20/417,700.80 = 68,107.20/x - Step 3: Cross multiply
278,467.20x = 417,700.80 × 68,107.20 - Step 4: Simplify right side
278,467.20x = 28,448,431,925.76 - Step 5: Solve for x
x = 28,448,431,925.76/278,467.20 - Step 6: Final answer
x = 102,160.80
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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.