Finding the Fourth Proportional to 286,919.64, 395,933.40 and 157,855.68
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Solution
The fourth proportional to 286,919.64, 395,933.40 and 157,855.68 is: 217,832.20
Step by Step Solution
- Step 1: Write the proportion equation
286,919.64 : 395,933.40 = 157,855.68 : x - Step 2: Convert to fraction form
286,919.64/395,933.40 = 157,855.68/x - Step 3: Cross multiply
286,919.64x = 395,933.40 × 157,855.68 - Step 4: Simplify right side
286,919.64x = 62,500,336,091.71 - Step 5: Solve for x
x = 62,500,336,091.71/286,919.64 - Step 6: Final answer
x = 217,832.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.