Finding the Fourth Proportional to 278,490.76, 417,744.23 and 68,128.63
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Solution
The fourth proportional to 278,490.76, 417,744.23 and 68,128.63 is: 102,194.92
Step by Step Solution
- Step 1: Write the proportion equation
278,490.76 : 417,744.23 = 68,128.63 : x - Step 2: Convert to fraction form
278,490.76/417,744.23 = 68,128.63/x - Step 3: Cross multiply
278,490.76x = 417,744.23 × 68,128.63 - Step 4: Simplify right side
278,490.76x = 28,460,340,161.91 - Step 5: Solve for x
x = 28,460,340,161.91/278,490.76 - Step 6: Final answer
x = 102,194.92
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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.