Finding the Fourth Proportional to 396,909.12, 547,648.11 and 235,817.94
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Solution
The fourth proportional to 396,909.12, 547,648.11 and 235,817.94 is: 325,377.38
Step by Step Solution
- Step 1: Write the proportion equation
396,909.12 : 547,648.11 = 235,817.94 : x - Step 2: Convert to fraction form
396,909.12/547,648.11 = 235,817.94/x - Step 3: Cross multiply
396,909.12x = 547,648.11 × 235,817.94 - Step 4: Simplify right side
396,909.12x = 129,145,249,145.09 - Step 5: Solve for x
x = 129,145,249,145.09/396,909.12 - Step 6: Final answer
x = 325,377.38
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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.