Finding the Fourth Proportional to 391,968.10, 587,806.35 and 155,261.80
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Solution
The fourth proportional to 391,968.10, 587,806.35 and 155,261.80 is: 232,834.95
Step by Step Solution
- Step 1: Write the proportion equation
391,968.10 : 587,806.35 = 155,261.80 : x - Step 2: Convert to fraction form
391,968.10/587,806.35 = 155,261.80/x - Step 3: Cross multiply
391,968.10x = 587,806.35 × 155,261.80 - Step 4: Simplify right side
391,968.10x = 91,263,871,952.43 - Step 5: Solve for x
x = 91,263,871,952.43/391,968.10 - Step 6: Final answer
x = 232,834.95
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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.