Finding the Fourth Proportional to 381,023.60, 571,331.21 and 128,220.03
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Solution
The fourth proportional to 381,023.60, 571,331.21 and 128,220.03 is: 192,261.33
Step by Step Solution
- Step 1: Write the proportion equation
381,023.60 : 571,331.21 = 128,220.03 : x - Step 2: Convert to fraction form
381,023.60/571,331.21 = 128,220.03/x - Step 3: Cross multiply
381,023.60x = 571,331.21 × 128,220.03 - Step 4: Simplify right side
381,023.60x = 73,256,104,245.04 - Step 5: Solve for x
x = 73,256,104,245.04/381,023.60 - Step 6: Final answer
x = 192,261.33
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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.