Finding the Fourth Proportional to 221,281.20, 331,921.80 and 73,537.20
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Solution
The fourth proportional to 221,281.20, 331,921.80 and 73,537.20 is: 110,305.80
Step by Step Solution
- Step 1: Write the proportion equation
221,281.20 : 331,921.80 = 73,537.20 : x - Step 2: Convert to fraction form
221,281.20/331,921.80 = 73,537.20/x - Step 3: Cross multiply
221,281.20x = 331,921.80 × 73,537.20 - Step 4: Simplify right side
221,281.20x = 24,408,599,790.96 - Step 5: Solve for x
x = 24,408,599,790.96/221,281.20 - Step 6: Final answer
x = 110,305.80
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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.