Finding the Fourth Proportional to 278,490.88, 417,744.42 and 68,128.75
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Solution
The fourth proportional to 278,490.88, 417,744.42 and 68,128.75 is: 102,195.11
Step by Step Solution
- Step 1: Write the proportion equation
278,490.88 : 417,744.42 = 68,128.75 : x - Step 2: Convert to fraction form
278,490.88/417,744.42 = 68,128.75/x - Step 3: Cross multiply
278,490.88x = 417,744.42 × 68,128.75 - Step 4: Simplify right side
278,490.88x = 28,460,405,154.08 - Step 5: Solve for x
x = 28,460,405,154.08/278,490.88 - Step 6: Final answer
x = 102,195.11
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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.