Finding the Fourth Proportional to 391,841.18, 587,817.12 and 125,539.40
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Solution
The fourth proportional to 391,841.18, 587,817.12 and 125,539.40 is: 188,326.83
Step by Step Solution
- Step 1: Write the proportion equation
391,841.18 : 587,817.12 = 125,539.40 : x - Step 2: Convert to fraction form
391,841.18/587,817.12 = 125,539.40/x - Step 3: Cross multiply
391,841.18x = 587,817.12 × 125,539.40 - Step 4: Simplify right side
391,841.18x = 73,794,208,554.53 - Step 5: Solve for x
x = 73,794,208,554.53/391,841.18 - Step 6: Final answer
x = 188,326.83
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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.