Finding the Fourth Proportional to 289,769.40, 434,135.70 and 178,831.80
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Solution
The fourth proportional to 289,769.40, 434,135.70 and 178,831.80 is: 267,927.77
Step by Step Solution
- Step 1: Write the proportion equation
289,769.40 : 434,135.70 = 178,831.80 : x - Step 2: Convert to fraction form
289,769.40/434,135.70 = 178,831.80/x - Step 3: Cross multiply
289,769.40x = 434,135.70 × 178,831.80 - Step 4: Simplify right side
289,769.40x = 77,637,268,675.26 - Step 5: Solve for x
x = 77,637,268,675.26/289,769.40 - Step 6: Final answer
x = 267,927.77
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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.