Finding the Fourth Proportional to 316,469.76, 474,703.56 and 129,481.26
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Solution
The fourth proportional to 316,469.76, 474,703.56 and 129,481.26 is: 194,221.45
Step by Step Solution
- Step 1: Write the proportion equation
316,469.76 : 474,703.56 = 129,481.26 : x - Step 2: Convert to fraction form
316,469.76/474,703.56 = 129,481.26/x - Step 3: Cross multiply
316,469.76x = 474,703.56 × 129,481.26 - Step 4: Simplify right side
316,469.76x = 61,465,215,075.29 - Step 5: Solve for x
x = 61,465,215,075.29/316,469.76 - Step 6: Final answer
x = 194,221.45
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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.