Finding the Fourth Proportional to 391,652.10, 587,478.15 and 125,421.30
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Solution
The fourth proportional to 391,652.10, 587,478.15 and 125,421.30 is: 188,131.95
Step by Step Solution
- Step 1: Write the proportion equation
391,652.10 : 587,478.15 = 125,421.30 : x - Step 2: Convert to fraction form
391,652.10/587,478.15 = 125,421.30/x - Step 3: Cross multiply
391,652.10x = 587,478.15 × 125,421.30 - Step 4: Simplify right side
391,652.10x = 73,682,273,294.60 - Step 5: Solve for x
x = 73,682,273,294.60/391,652.10 - Step 6: Final answer
x = 188,131.95
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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.