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Finding the Fourth Proportional to 255,037.20, 381,972.60 and 130,232.40

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Solution

The fourth proportional to 255,037.20, 381,972.60 and 130,232.40 is: 195,050.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,037.20 : 381,972.60 = 130,232.40 : x
  2. Step 2: Convert to fraction form
    255,037.20/381,972.60 = 130,232.40/x
  3. Step 3: Cross multiply
    255,037.20x = 381,972.60 × 130,232.40
  4. Step 4: Simplify right side
    255,037.20x = 49,745,208,432.24
  5. Step 5: Solve for x
    x = 49,745,208,432.24/255,037.20
  6. Step 6: Final answer
    x = 195,050.79

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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.