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Finding the Fourth Proportional to 254,473.20, 381,128.28 and 121,446.88

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Solution

The fourth proportional to 254,473.20, 381,128.28 and 121,446.88 is: 181,892.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,473.20 : 381,128.28 = 121,446.88 : x
  2. Step 2: Convert to fraction form
    254,473.20/381,128.28 = 121,446.88/x
  3. Step 3: Cross multiply
    254,473.20x = 381,128.28 × 121,446.88
  4. Step 4: Simplify right side
    254,473.20x = 46,286,840,485.77
  5. Step 5: Solve for x
    x = 46,286,840,485.77/254,473.20
  6. Step 6: Final answer
    x = 181,892.79

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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.