Finding the Fourth Proportional to 381,108.96, 571,721.76 and 100,648.08
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Solution
The fourth proportional to 381,108.96, 571,721.76 and 100,648.08 is: 150,987.52
Step by Step Solution
- Step 1: Write the proportion equation
381,108.96 : 571,721.76 = 100,648.08 : x - Step 2: Convert to fraction form
381,108.96/571,721.76 = 100,648.08/x - Step 3: Cross multiply
381,108.96x = 571,721.76 × 100,648.08 - Step 4: Simplify right side
381,108.96x = 57,542,697,438.22 - Step 5: Solve for x
x = 57,542,697,438.22/381,108.96 - Step 6: Final answer
x = 150,987.52
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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.