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Finding the Fourth Proportional to 253,833.03, 380,651.13 and 135,439.79

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Solution

The fourth proportional to 253,833.03, 380,651.13 and 135,439.79 is: 203,107.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,833.03 : 380,651.13 = 135,439.79 : x
  2. Step 2: Convert to fraction form
    253,833.03/380,651.13 = 135,439.79/x
  3. Step 3: Cross multiply
    253,833.03x = 380,651.13 × 135,439.79
  4. Step 4: Simplify right side
    253,833.03x = 51,555,309,110.46
  5. Step 5: Solve for x
    x = 51,555,309,110.46/253,833.03
  6. Step 6: Final answer
    x = 203,107.17

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1.5x scale

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.