Finding the Fourth Proportional to 259,742.13, 389,652.15 and 91,232.75
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Solution
The fourth proportional to 259,742.13, 389,652.15 and 91,232.75 is: 136,862.81
Step by Step Solution
- Step 1: Write the proportion equation
259,742.13 : 389,652.15 = 91,232.75 : x - Step 2: Convert to fraction form
259,742.13/389,652.15 = 91,232.75/x - Step 3: Cross multiply
259,742.13x = 389,652.15 × 91,232.75 - Step 4: Simplify right side
259,742.13x = 35,549,037,187.91 - Step 5: Solve for x
x = 35,549,037,187.91/259,742.13 - Step 6: Final answer
x = 136,862.81
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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.