Finding the Fourth Proportional to 278,235.82, 417,305.26 and 128,463.31
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Solution
The fourth proportional to 278,235.82, 417,305.26 and 128,463.31 is: 192,672.59
Step by Step Solution
- Step 1: Write the proportion equation
278,235.82 : 417,305.26 = 128,463.31 : x - Step 2: Convert to fraction form
278,235.82/417,305.26 = 128,463.31/x - Step 3: Cross multiply
278,235.82x = 417,305.26 × 128,463.31 - Step 4: Simplify right side
278,235.82x = 53,608,414,980.01 - Step 5: Solve for x
x = 53,608,414,980.01/278,235.82 - Step 6: Final answer
x = 192,672.59
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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.