Finding the Fourth Proportional to 255,686.21, 383,467.79 and 78,194.75
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Solution
The fourth proportional to 255,686.21, 383,467.79 and 78,194.75 is: 117,273.32
Step by Step Solution
- Step 1: Write the proportion equation
255,686.21 : 383,467.79 = 78,194.75 : x - Step 2: Convert to fraction form
255,686.21/383,467.79 = 78,194.75/x - Step 3: Cross multiply
255,686.21x = 383,467.79 × 78,194.75 - Step 4: Simplify right side
255,686.21x = 29,985,169,126.26 - Step 5: Solve for x
x = 29,985,169,126.26/255,686.21 - Step 6: Final answer
x = 117,273.32
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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.