Finding the Fourth Proportional to 391,788.94, 587,904.84 and 167,128.15
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Solution
The fourth proportional to 391,788.94, 587,904.84 and 167,128.15 is: 250,786.68
Step by Step Solution
- Step 1: Write the proportion equation
391,788.94 : 587,904.84 = 167,128.15 : x - Step 2: Convert to fraction form
391,788.94/587,904.84 = 167,128.15/x - Step 3: Cross multiply
391,788.94x = 587,904.84 × 167,128.15 - Step 4: Simplify right side
391,788.94x = 98,255,448,285.25 - Step 5: Solve for x
x = 98,255,448,285.25/391,788.94 - Step 6: Final answer
x = 250,786.68
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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.