Finding the Fourth Proportional to 258,115.75, 387,188.21 and 91,903.75
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Solution
The fourth proportional to 258,115.75, 387,188.21 and 91,903.75 is: 137,860.82
Step by Step Solution
- Step 1: Write the proportion equation
258,115.75 : 387,188.21 = 91,903.75 : x - Step 2: Convert to fraction form
258,115.75/387,188.21 = 91,903.75/x - Step 3: Cross multiply
258,115.75x = 387,188.21 × 91,903.75 - Step 4: Simplify right side
258,115.75x = 35,584,048,454.79 - Step 5: Solve for x
x = 35,584,048,454.79/258,115.75 - Step 6: Final answer
x = 137,860.82
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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.