Finding the Fourth Proportional to 221,285.76, 331,961.28 and 71,476.08
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Solution
The fourth proportional to 221,285.76, 331,961.28 and 71,476.08 is: 107,224.66
Step by Step Solution
- Step 1: Write the proportion equation
221,285.76 : 331,961.28 = 71,476.08 : x - Step 2: Convert to fraction form
221,285.76/331,961.28 = 71,476.08/x - Step 3: Cross multiply
221,285.76x = 331,961.28 × 71,476.08 - Step 4: Simplify right side
221,285.76x = 23,727,291,006.18 - Step 5: Solve for x
x = 23,727,291,006.18/221,285.76 - Step 6: Final answer
x = 107,224.66
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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.