Finding the Fourth Proportional to 286,742.56, 395,714.84 and 157,690.84
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Solution
The fourth proportional to 286,742.56, 395,714.84 and 157,690.84 is: 217,618.92
Step by Step Solution
- Step 1: Write the proportion equation
286,742.56 : 395,714.84 = 157,690.84 : x - Step 2: Convert to fraction form
286,742.56/395,714.84 = 157,690.84/x - Step 3: Cross multiply
286,742.56x = 395,714.84 × 157,690.84 - Step 4: Simplify right side
286,742.56x = 62,400,605,520.07 - Step 5: Solve for x
x = 62,400,605,520.07/286,742.56 - Step 6: Final answer
x = 217,618.92
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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.