Finding the Fourth Proportional to 258,575.08, 387,739.34 and 90,074.68
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Solution
The fourth proportional to 258,575.08, 387,739.34 and 90,074.68 is: 135,069.08
Step by Step Solution
- Step 1: Write the proportion equation
258,575.08 : 387,739.34 = 90,074.68 : x - Step 2: Convert to fraction form
258,575.08/387,739.34 = 90,074.68/x - Step 3: Cross multiply
258,575.08x = 387,739.34 × 90,074.68 - Step 4: Simplify right side
258,575.08x = 34,925,496,973.91 - Step 5: Solve for x
x = 34,925,496,973.91/258,575.08 - Step 6: Final answer
x = 135,069.08
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1.5x scale
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.