Finding the Fourth Proportional to 278,490.44, 417,743.76 and 68,128.31
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Solution
The fourth proportional to 278,490.44, 417,743.76 and 68,128.31 is: 102,194.45
Step by Step Solution
- Step 1: Write the proportion equation
278,490.44 : 417,743.76 = 68,128.31 : x - Step 2: Convert to fraction form
278,490.44/417,743.76 = 68,128.31/x - Step 3: Cross multiply
278,490.44x = 417,743.76 × 68,128.31 - Step 4: Simplify right side
278,490.44x = 28,460,177,681.69 - Step 5: Solve for x
x = 28,460,177,681.69/278,490.44 - Step 6: Final answer
x = 102,194.45
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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.