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Finding the Fourth Proportional to 252,177.20, 378,265.80 and 134,079.20

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Solution

The fourth proportional to 252,177.20, 378,265.80 and 134,079.20 is: 201,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,177.20 : 378,265.80 = 134,079.20 : x
  2. Step 2: Convert to fraction form
    252,177.20/378,265.80 = 134,079.20/x
  3. Step 3: Cross multiply
    252,177.20x = 378,265.80 × 134,079.20
  4. Step 4: Simplify right side
    252,177.20x = 50,717,575,851.36
  5. Step 5: Solve for x
    x = 50,717,575,851.36/252,177.20
  6. Step 6: Final answer
    x = 201,118.80

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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.