Finding the Fourth Proportional to 388,040.24, 582,155.40 and 135,285.68
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Solution
The fourth proportional to 388,040.24, 582,155.40 and 135,285.68 is: 202,961.65
Step by Step Solution
- Step 1: Write the proportion equation
388,040.24 : 582,155.40 = 135,285.68 : x - Step 2: Convert to fraction form
388,040.24/582,155.40 = 135,285.68/x - Step 3: Cross multiply
388,040.24x = 582,155.40 × 135,285.68 - Step 4: Simplify right side
388,040.24x = 78,757,289,154.67 - Step 5: Solve for x
x = 78,757,289,154.67/388,040.24 - Step 6: Final answer
x = 202,961.65
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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.