Finding the Fourth Proportional to 391,949.12, 587,950.42 and 155,291.44
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Solution
The fourth proportional to 391,949.12, 587,950.42 and 155,291.44 is: 232,947.75
Step by Step Solution
- Step 1: Write the proportion equation
391,949.12 : 587,950.42 = 155,291.44 : x - Step 2: Convert to fraction form
391,949.12/587,950.42 = 155,291.44/x - Step 3: Cross multiply
391,949.12x = 587,950.42 × 155,291.44 - Step 4: Simplify right side
391,949.12x = 91,303,667,370.40 - Step 5: Solve for x
x = 91,303,667,370.40/391,949.12 - Step 6: Final answer
x = 232,947.75
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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.