Finding the Fourth Proportional to 281,332.71, 421,794.95 and 131,489.19
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Solution
The fourth proportional to 281,332.71, 421,794.95 and 131,489.19 is: 197,138.38
Step by Step Solution
- Step 1: Write the proportion equation
281,332.71 : 421,794.95 = 131,489.19 : x - Step 2: Convert to fraction form
281,332.71/421,794.95 = 131,489.19/x - Step 3: Cross multiply
281,332.71x = 421,794.95 × 131,489.19 - Step 4: Simplify right side
281,332.71x = 55,461,475,664.14 - Step 5: Solve for x
x = 55,461,475,664.14/281,332.71 - Step 6: Final answer
x = 197,138.38
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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.