Home / 254,289.78-381,441.15-76,802.58

Finding the Fourth Proportional to 254,289.78, 381,441.15 and 76,802.58

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Solution

The fourth proportional to 254,289.78, 381,441.15 and 76,802.58 is: 115,205.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,289.78 : 381,441.15 = 76,802.58 : x
  2. Step 2: Convert to fraction form
    254,289.78/381,441.15 = 76,802.58/x
  3. Step 3: Cross multiply
    254,289.78x = 381,441.15 × 76,802.58
  4. Step 4: Simplify right side
    254,289.78x = 29,295,664,438.17
  5. Step 5: Solve for x
    x = 29,295,664,438.17/254,289.78
  6. Step 6: Final answer
    x = 115,205.83

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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.