Home / 252,406.40-378,091.20-127,817.60

Finding the Fourth Proportional to 252,406.40, 378,091.20 and 127,817.60

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Solution

The fourth proportional to 252,406.40, 378,091.20 and 127,817.60 is: 191,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,406.40 : 378,091.20 = 127,817.60 : x
  2. Step 2: Convert to fraction form
    252,406.40/378,091.20 = 127,817.60/x
  3. Step 3: Cross multiply
    252,406.40x = 378,091.20 × 127,817.60
  4. Step 4: Simplify right side
    252,406.40x = 48,326,709,765.12
  5. Step 5: Solve for x
    x = 48,326,709,765.12/252,406.40
  6. Step 6: Final answer
    x = 191,463.88

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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.