Home / 254,453.40-381,607.20-76,917.60

Finding the Fourth Proportional to 254,453.40, 381,607.20 and 76,917.60

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Solution

The fourth proportional to 254,453.40, 381,607.20 and 76,917.60 is: 115,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,453.40 : 381,607.20 = 76,917.60 : x
  2. Step 2: Convert to fraction form
    254,453.40/381,607.20 = 76,917.60/x
  3. Step 3: Cross multiply
    254,453.40x = 381,607.20 × 76,917.60
  4. Step 4: Simplify right side
    254,453.40x = 29,352,309,966.72
  5. Step 5: Solve for x
    x = 29,352,309,966.72/254,453.40
  6. Step 6: Final answer
    x = 115,354.36

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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.