Finding the Fourth Proportional to 258,454.88, 387,700.84 and 68,914.26
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Solution
The fourth proportional to 258,454.88, 387,700.84 and 68,914.26 is: 103,376.32
Step by Step Solution
- Step 1: Write the proportion equation
258,454.88 : 387,700.84 = 68,914.26 : x - Step 2: Convert to fraction form
258,454.88/387,700.84 = 68,914.26/x - Step 3: Cross multiply
258,454.88x = 387,700.84 × 68,914.26 - Step 4: Simplify right side
258,454.88x = 26,718,115,291.89 - Step 5: Solve for x
x = 26,718,115,291.89/258,454.88 - Step 6: Final answer
x = 103,376.32
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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.