Finding the Fourth Proportional to 282,757.28, 390,195.14 and 155,431.95
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Solution
The fourth proportional to 282,757.28, 390,195.14 and 155,431.95 is: 214,490.65
Step by Step Solution
- Step 1: Write the proportion equation
282,757.28 : 390,195.14 = 155,431.95 : x - Step 2: Convert to fraction form
282,757.28/390,195.14 = 155,431.95/x - Step 3: Cross multiply
282,757.28x = 390,195.14 × 155,431.95 - Step 4: Simplify right side
282,757.28x = 60,648,790,713.56 - Step 5: Solve for x
x = 60,648,790,713.56/282,757.28 - Step 6: Final answer
x = 214,490.65
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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.