Finding the Fourth Proportional to 289,342.76, 434,055.20 and 89,678.84
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Solution
The fourth proportional to 289,342.76, 434,055.20 and 89,678.84 is: 134,530.99
Step by Step Solution
- Step 1: Write the proportion equation
289,342.76 : 434,055.20 = 89,678.84 : x - Step 2: Convert to fraction form
289,342.76/434,055.20 = 89,678.84/x - Step 3: Cross multiply
289,342.76x = 434,055.20 × 89,678.84 - Step 4: Simplify right side
289,342.76x = 38,925,566,831.97 - Step 5: Solve for x
x = 38,925,566,831.97/289,342.76 - Step 6: Final answer
x = 134,530.99
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1.5x scale
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.