Home / 254,456.24-381,103-121,429.90

Finding the Fourth Proportional to 254,456.24, 381,103 and 121,429.90

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Solution

The fourth proportional to 254,456.24, 381,103 and 121,429.90 is: 181,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,456.24 : 381,103 = 121,429.90 : x
  2. Step 2: Convert to fraction form
    254,456.24/381,103 = 121,429.90/x
  3. Step 3: Cross multiply
    254,456.24x = 381,103 × 121,429.90
  4. Step 4: Simplify right side
    254,456.24x = 46,277,299,179.70
  5. Step 5: Solve for x
    x = 46,277,299,179.70/254,456.24
  6. Step 6: Final answer
    x = 181,867.42

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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.