Finding the Fourth Proportional to 221,353.70, 331,987.35 and 71,557.70
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Solution
The fourth proportional to 221,353.70, 331,987.35 and 71,557.70 is: 107,322.58
Step by Step Solution
- Step 1: Write the proportion equation
221,353.70 : 331,987.35 = 71,557.70 : x - Step 2: Convert to fraction form
221,353.70/331,987.35 = 71,557.70/x - Step 3: Cross multiply
221,353.70x = 331,987.35 × 71,557.70 - Step 4: Simplify right side
221,353.70x = 23,756,251,195.10 - Step 5: Solve for x
x = 23,756,251,195.10/221,353.70 - Step 6: Final answer
x = 107,322.58
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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.