Finding the Fourth Proportional to 391,420.44, 587,363.94 and 142,121.88
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Solution
The fourth proportional to 391,420.44, 587,363.94 and 142,121.88 is: 213,267.52
Step by Step Solution
- Step 1: Write the proportion equation
391,420.44 : 587,363.94 = 142,121.88 : x - Step 2: Convert to fraction form
391,420.44/587,363.94 = 142,121.88/x - Step 3: Cross multiply
391,420.44x = 587,363.94 × 142,121.88 - Step 4: Simplify right side
391,420.44x = 83,477,267,397.01 - Step 5: Solve for x
x = 83,477,267,397.01/391,420.44 - Step 6: Final answer
x = 213,267.52
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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.