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Finding the Fourth Proportional to 254,454.84, 381,787.92 and 128,027.58

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Solution

The fourth proportional to 254,454.84, 381,787.92 and 128,027.58 is: 192,094.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,454.84 : 381,787.92 = 128,027.58 : x
  2. Step 2: Convert to fraction form
    254,454.84/381,787.92 = 128,027.58/x
  3. Step 3: Cross multiply
    254,454.84x = 381,787.92 × 128,027.58
  4. Step 4: Simplify right side
    254,454.84x = 48,879,383,470.83
  5. Step 5: Solve for x
    x = 48,879,383,470.83/254,454.84
  6. Step 6: Final answer
    x = 192,094.53

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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.