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Finding the Fourth Proportional to 302,512.80, 453,769.20 and 255,856.80

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Solution

The fourth proportional to 302,512.80, 453,769.20 and 255,856.80 is: 383,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,512.80 : 453,769.20 = 255,856.80 : x
  2. Step 2: Convert to fraction form
    302,512.80/453,769.20 = 255,856.80/x
  3. Step 3: Cross multiply
    302,512.80x = 453,769.20 × 255,856.80
  4. Step 4: Simplify right side
    302,512.80x = 116,099,935,450.56
  5. Step 5: Solve for x
    x = 116,099,935,450.56/302,512.80
  6. Step 6: Final answer
    x = 383,785.20

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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.