Finding the Fourth Proportional to 391,712.16, 587,582.18 and 125,438.08
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Solution
The fourth proportional to 391,712.16, 587,582.18 and 125,438.08 is: 188,161.58
Step by Step Solution
- Step 1: Write the proportion equation
391,712.16 : 587,582.18 = 125,438.08 : x - Step 2: Convert to fraction form
391,712.16/587,582.18 = 125,438.08/x - Step 3: Cross multiply
391,712.16x = 587,582.18 × 125,438.08 - Step 4: Simplify right side
391,712.16x = 73,705,180,501.41 - Step 5: Solve for x
x = 73,705,180,501.41/391,712.16 - Step 6: Final answer
x = 188,161.58
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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.