Finding the Fourth Proportional to 221,694.59, 305,938.80 and 126,201.20
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Solution
The fourth proportional to 221,694.59, 305,938.80 and 126,201.20 is: 174,157.80
Step by Step Solution
- Step 1: Write the proportion equation
221,694.59 : 305,938.80 = 126,201.20 : x - Step 2: Convert to fraction form
221,694.59/305,938.80 = 126,201.20/x - Step 3: Cross multiply
221,694.59x = 305,938.80 × 126,201.20 - Step 4: Simplify right side
221,694.59x = 38,609,842,156.87 - Step 5: Solve for x
x = 38,609,842,156.87/221,694.59 - Step 6: Final answer
x = 174,157.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.