Finding the Fourth Proportional to 396,440.64, 547,542.15 and 261,079.65
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Solution
The fourth proportional to 396,440.64, 547,542.15 and 261,079.65 is: 360,588.95
Step by Step Solution
- Step 1: Write the proportion equation
396,440.64 : 547,542.15 = 261,079.65 : x - Step 2: Convert to fraction form
396,440.64/547,542.15 = 261,079.65/x - Step 3: Cross multiply
396,440.64x = 547,542.15 × 261,079.65 - Step 4: Simplify right side
396,440.64x = 142,952,112,882.25 - Step 5: Solve for x
x = 142,952,112,882.25/396,440.64 - Step 6: Final answer
x = 360,588.95
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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.