Finding the Fourth Proportional to 329,270.20, 494,135.70 and 142,415.80
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Solution
The fourth proportional to 329,270.20, 494,135.70 and 142,415.80 is: 213,723.35
Step by Step Solution
- Step 1: Write the proportion equation
329,270.20 : 494,135.70 = 142,415.80 : x - Step 2: Convert to fraction form
329,270.20/494,135.70 = 142,415.80/x - Step 3: Cross multiply
329,270.20x = 494,135.70 × 142,415.80 - Step 4: Simplify right side
329,270.20x = 70,372,731,024.06 - Step 5: Solve for x
x = 70,372,731,024.06/329,270.20 - Step 6: Final answer
x = 213,723.35
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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.