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Finding the Fourth Proportional to 285,052.70, 393,310.25 and 170,314.11

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Solution

The fourth proportional to 285,052.70, 393,310.25 and 170,314.11 is: 234,996.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,052.70 : 393,310.25 = 170,314.11 : x
  2. Step 2: Convert to fraction form
    285,052.70/393,310.25 = 170,314.11/x
  3. Step 3: Cross multiply
    285,052.70x = 393,310.25 × 170,314.11
  4. Step 4: Simplify right side
    285,052.70x = 66,986,284,969.73
  5. Step 5: Solve for x
    x = 66,986,284,969.73/285,052.70
  6. Step 6: Final answer
    x = 234,996.14

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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.