Finding the Fourth Proportional to 285,987.21, 394,719.80 and 165,148.17
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Solution
The fourth proportional to 285,987.21, 394,719.80 and 165,148.17 is: 227,937.65
Step by Step Solution
- Step 1: Write the proportion equation
285,987.21 : 394,719.80 = 165,148.17 : x - Step 2: Convert to fraction form
285,987.21/394,719.80 = 165,148.17/x - Step 3: Cross multiply
285,987.21x = 394,719.80 × 165,148.17 - Step 4: Simplify right side
285,987.21x = 65,187,251,807.03 - Step 5: Solve for x
x = 65,187,251,807.03/285,987.21 - Step 6: Final answer
x = 227,937.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.