Finding the Fourth Proportional to 381,058.24, 571,615.30 and 128,337.42
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Solution
The fourth proportional to 381,058.24, 571,615.30 and 128,337.42 is: 192,515.54
Step by Step Solution
- Step 1: Write the proportion equation
381,058.24 : 571,615.30 = 128,337.42 : x - Step 2: Convert to fraction form
381,058.24/571,615.30 = 128,337.42/x - Step 3: Cross multiply
381,058.24x = 571,615.30 × 128,337.42 - Step 4: Simplify right side
381,058.24x = 73,359,632,834.53 - Step 5: Solve for x
x = 73,359,632,834.53/381,058.24 - Step 6: Final answer
x = 192,515.54
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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.