Finding the Fourth Proportional to 221,143.93, 331,519.49 and 86,176.73
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Solution
The fourth proportional to 221,143.93, 331,519.49 and 86,176.73 is: 129,188.56
Step by Step Solution
- Step 1: Write the proportion equation
221,143.93 : 331,519.49 = 86,176.73 : x - Step 2: Convert to fraction form
221,143.93/331,519.49 = 86,176.73/x - Step 3: Cross multiply
221,143.93x = 331,519.49 × 86,176.73 - Step 4: Simplify right side
221,143.93x = 28,569,265,794.91 - Step 5: Solve for x
x = 28,569,265,794.91/221,143.93 - Step 6: Final answer
x = 129,188.56
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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.