Finding the Fourth Proportional to 305,866.31, 458,896.97 and 128,325.65
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Solution
The fourth proportional to 305,866.31, 458,896.97 and 128,325.65 is: 192,529.38
Step by Step Solution
- Step 1: Write the proportion equation
305,866.31 : 458,896.97 = 128,325.65 : x - Step 2: Convert to fraction form
305,866.31/458,896.97 = 128,325.65/x - Step 3: Cross multiply
305,866.31x = 458,896.97 × 128,325.65 - Step 4: Simplify right side
305,866.31x = 58,888,251,958.28 - Step 5: Solve for x
x = 58,888,251,958.28/305,866.31 - Step 6: Final answer
x = 192,529.38
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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.