Finding the Fourth Proportional to 261,774.10, 392,698.28 and 84,239.79
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Solution
The fourth proportional to 261,774.10, 392,698.28 and 84,239.79 is: 126,371.63
Step by Step Solution
- Step 1: Write the proportion equation
261,774.10 : 392,698.28 = 84,239.79 : x - Step 2: Convert to fraction form
261,774.10/392,698.28 = 84,239.79/x - Step 3: Cross multiply
261,774.10x = 392,698.28 × 84,239.79 - Step 4: Simplify right side
261,774.10x = 33,080,820,640.56 - Step 5: Solve for x
x = 33,080,820,640.56/261,774.10 - Step 6: Final answer
x = 126,371.63
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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.