Finding the Fourth Proportional to 278,457.12, 417,685.68 and 68,092.56
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Solution
The fourth proportional to 278,457.12, 417,685.68 and 68,092.56 is: 102,138.84
Step by Step Solution
- Step 1: Write the proportion equation
278,457.12 : 417,685.68 = 68,092.56 : x - Step 2: Convert to fraction form
278,457.12/417,685.68 = 68,092.56/x - Step 3: Cross multiply
278,457.12x = 417,685.68 × 68,092.56 - Step 4: Simplify right side
278,457.12x = 28,441,287,226.54 - Step 5: Solve for x
x = 28,441,287,226.54/278,457.12 - Step 6: Final answer
x = 102,138.84
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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.