Finding the Fourth Proportional to 278,122.40, 383,806.68 and 157,263.68
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Solution
The fourth proportional to 278,122.40, 383,806.68 and 157,263.68 is: 217,022.62
Step by Step Solution
- Step 1: Write the proportion equation
278,122.40 : 383,806.68 = 157,263.68 : x - Step 2: Convert to fraction form
278,122.40/383,806.68 = 157,263.68/x - Step 3: Cross multiply
278,122.40x = 383,806.68 × 157,263.68 - Step 4: Simplify right side
278,122.40x = 60,358,850,905.38 - Step 5: Solve for x
x = 60,358,850,905.38/278,122.40 - Step 6: Final answer
x = 217,022.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.