Home / 254,140.96-381,261.12-76,662.40

Finding the Fourth Proportional to 254,140.96, 381,261.12 and 76,662.40

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Solution

The fourth proportional to 254,140.96, 381,261.12 and 76,662.40 is: 115,008.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,140.96 : 381,261.12 = 76,662.40 : x
  2. Step 2: Convert to fraction form
    254,140.96/381,261.12 = 76,662.40/x
  3. Step 3: Cross multiply
    254,140.96x = 381,261.12 × 76,662.40
  4. Step 4: Simplify right side
    254,140.96x = 29,228,392,485.89
  5. Step 5: Solve for x
    x = 29,228,392,485.89/254,140.96
  6. Step 6: Final answer
    x = 115,008.59

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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.