Finding the Fourth Proportional to 285,113.44, 393,422.08 and 157,781.44
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Solution
The fourth proportional to 285,113.44, 393,422.08 and 157,781.44 is: 217,719.31
Step by Step Solution
- Step 1: Write the proportion equation
285,113.44 : 393,422.08 = 157,781.44 : x - Step 2: Convert to fraction form
285,113.44/393,422.08 = 157,781.44/x - Step 3: Cross multiply
285,113.44x = 393,422.08 × 157,781.44 - Step 4: Simplify right side
285,113.44x = 62,074,702,310.20 - Step 5: Solve for x
x = 62,074,702,310.20/285,113.44 - Step 6: Final answer
x = 217,719.31
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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.