Finding the Fourth Proportional to 261,197.20, 391,779.36 and 155,936.92
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Solution
The fourth proportional to 261,197.20, 391,779.36 and 155,936.92 is: 233,895.57
Step by Step Solution
- Step 1: Write the proportion equation
261,197.20 : 391,779.36 = 155,936.92 : x - Step 2: Convert to fraction form
261,197.20/391,779.36 = 155,936.92/x - Step 3: Cross multiply
261,197.20x = 391,779.36 × 155,936.92 - Step 4: Simplify right side
261,197.20x = 61,092,866,717.97 - Step 5: Solve for x
x = 61,092,866,717.97/261,197.20 - Step 6: Final answer
x = 233,895.57
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1.5x scale
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.