Finding the Fourth Proportional to 278,815.26, 417,987.79 and 120,924.80
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Solution
The fourth proportional to 278,815.26, 417,987.79 and 120,924.80 is: 181,285.23
Step by Step Solution
- Step 1: Write the proportion equation
278,815.26 : 417,987.79 = 120,924.80 : x - Step 2: Convert to fraction form
278,815.26/417,987.79 = 120,924.80/x - Step 3: Cross multiply
278,815.26x = 417,987.79 × 120,924.80 - Step 4: Simplify right side
278,815.26x = 50,545,089,908.19 - Step 5: Solve for x
x = 50,545,089,908.19/278,815.26 - Step 6: Final answer
x = 181,285.23
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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.