Home / 254,170.21-381,258.05-76,678.76

Finding the Fourth Proportional to 254,170.21, 381,258.05 and 76,678.76

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Solution

The fourth proportional to 254,170.21, 381,258.05 and 76,678.76 is: 115,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,170.21 : 381,258.05 = 76,678.76 : x
  2. Step 2: Convert to fraction form
    254,170.21/381,258.05 = 76,678.76/x
  3. Step 3: Cross multiply
    254,170.21x = 381,258.05 × 76,678.76
  4. Step 4: Simplify right side
    254,170.21x = 29,234,393,752.57
  5. Step 5: Solve for x
    x = 29,234,393,752.57/254,170.21
  6. Step 6: Final answer
    x = 115,018.96

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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.