Finding the Fourth Proportional to 391,473.24, 587,301.80 and 121,587.60
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Solution
The fourth proportional to 391,473.24, 587,301.80 and 121,587.60 is: 182,409.96
Step by Step Solution
- Step 1: Write the proportion equation
391,473.24 : 587,301.80 = 121,587.60 : x - Step 2: Convert to fraction form
391,473.24/587,301.80 = 121,587.60/x - Step 3: Cross multiply
391,473.24x = 587,301.80 × 121,587.60 - Step 4: Simplify right side
391,473.24x = 71,408,616,337.68 - Step 5: Solve for x
x = 71,408,616,337.68/391,473.24 - Step 6: Final answer
x = 182,409.96
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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.