Finding the Fourth Proportional to 280,742.14, 387,463.67 and 178,735.02
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Solution
The fourth proportional to 280,742.14, 387,463.67 and 178,735.02 is: 246,679.49
Step by Step Solution
- Step 1: Write the proportion equation
280,742.14 : 387,463.67 = 178,735.02 : x - Step 2: Convert to fraction form
280,742.14/387,463.67 = 178,735.02/x - Step 3: Cross multiply
280,742.14x = 387,463.67 × 178,735.02 - Step 4: Simplify right side
280,742.14x = 69,253,326,806.72 - Step 5: Solve for x
x = 69,253,326,806.72/280,742.14 - Step 6: Final answer
x = 246,679.49
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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.