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Finding the Fourth Proportional to 491,930.58, 738,289.54 and 255,340.92

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Solution

The fourth proportional to 491,930.58, 738,289.54 and 255,340.92 is: 383,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,930.58 : 738,289.54 = 255,340.92 : x
  2. Step 2: Convert to fraction form
    491,930.58/738,289.54 = 255,340.92/x
  3. Step 3: Cross multiply
    491,930.58x = 738,289.54 × 255,340.92
  4. Step 4: Simplify right side
    491,930.58x = 188,515,532,021.45
  5. Step 5: Solve for x
    x = 188,515,532,021.45/491,930.58
  6. Step 6: Final answer
    x = 383,215.72

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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.