Finding the Fourth Proportional to 261,788.09, 392,660.16 and 103,974.17
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Solution
The fourth proportional to 261,788.09, 392,660.16 and 103,974.17 is: 155,952.52
Step by Step Solution
- Step 1: Write the proportion equation
261,788.09 : 392,660.16 = 103,974.17 : x - Step 2: Convert to fraction form
261,788.09/392,660.16 = 103,974.17/x - Step 3: Cross multiply
261,788.09x = 392,660.16 × 103,974.17 - Step 4: Simplify right side
261,788.09x = 40,826,511,874.86 - Step 5: Solve for x
x = 40,826,511,874.86/261,788.09 - Step 6: Final answer
x = 155,952.52
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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.