Finding the Fourth Proportional to 278,847.08, 384,807.67 and 157,988.09
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Solution
The fourth proportional to 278,847.08, 384,807.67 and 157,988.09 is: 218,022.83
Step by Step Solution
- Step 1: Write the proportion equation
278,847.08 : 384,807.67 = 157,988.09 : x - Step 2: Convert to fraction form
278,847.08/384,807.67 = 157,988.09/x - Step 3: Cross multiply
278,847.08x = 384,807.67 × 157,988.09 - Step 4: Simplify right side
278,847.08x = 60,795,028,800.65 - Step 5: Solve for x
x = 60,795,028,800.65/278,847.08 - Step 6: Final answer
x = 218,022.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.