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Finding the Fourth Proportional to 252,527.40, 378,491.40 and 134,137.80

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Solution

The fourth proportional to 252,527.40, 378,491.40 and 134,137.80 is: 201,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,527.40 : 378,491.40 = 134,137.80 : x
  2. Step 2: Convert to fraction form
    252,527.40/378,491.40 = 134,137.80/x
  3. Step 3: Cross multiply
    252,527.40x = 378,491.40 × 134,137.80
  4. Step 4: Simplify right side
    252,527.40x = 50,770,003,714.92
  5. Step 5: Solve for x
    x = 50,770,003,714.92/252,527.40
  6. Step 6: Final answer
    x = 201,047.51

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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.