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Finding the Fourth Proportional to 255,412.80, 383,119.20 and 227,856.60

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Solution

The fourth proportional to 255,412.80, 383,119.20 and 227,856.60 is: 341,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,412.80 : 383,119.20 = 227,856.60 : x
  2. Step 2: Convert to fraction form
    255,412.80/383,119.20 = 227,856.60/x
  3. Step 3: Cross multiply
    255,412.80x = 383,119.20 × 227,856.60
  4. Step 4: Simplify right side
    255,412.80x = 87,296,238,306.72
  5. Step 5: Solve for x
    x = 87,296,238,306.72/255,412.80
  6. Step 6: Final answer
    x = 341,784.90

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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.