Finding the Fourth Proportional to 258,416.91, 387,625.37 and 80,937.81
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Solution
The fourth proportional to 258,416.91, 387,625.37 and 80,937.81 is: 121,406.72
Step by Step Solution
- Step 1: Write the proportion equation
258,416.91 : 387,625.37 = 80,937.81 : x - Step 2: Convert to fraction form
258,416.91/387,625.37 = 80,937.81/x - Step 3: Cross multiply
258,416.91x = 387,625.37 × 80,937.81 - Step 4: Simplify right side
258,416.91x = 31,373,548,548.24 - Step 5: Solve for x
x = 31,373,548,548.24/258,416.91 - Step 6: Final answer
x = 121,406.72
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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.