Finding the Fourth Proportional to 391,390.74, 587,159.94 and 125,079.75
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Solution
The fourth proportional to 391,390.74, 587,159.94 and 125,079.75 is: 187,643.22
Step by Step Solution
- Step 1: Write the proportion equation
391,390.74 : 587,159.94 = 125,079.75 : x - Step 2: Convert to fraction form
391,390.74/587,159.94 = 125,079.75/x - Step 3: Cross multiply
391,390.74x = 587,159.94 × 125,079.75 - Step 4: Simplify right side
391,390.74x = 73,441,818,505.22 - Step 5: Solve for x
x = 73,441,818,505.22/391,390.74 - Step 6: Final answer
x = 187,643.22
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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.