Home / 445,145.12-667,748.45-178,905.86

Finding the Fourth Proportional to 445,145.12, 667,748.45 and 178,905.86

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Solution

The fourth proportional to 445,145.12, 667,748.45 and 178,905.86 is: 268,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,145.12 : 667,748.45 = 178,905.86 : x
  2. Step 2: Convert to fraction form
    445,145.12/667,748.45 = 178,905.86/x
  3. Step 3: Cross multiply
    445,145.12x = 667,748.45 × 178,905.86
  4. Step 4: Simplify right side
    445,145.12x = 119,464,107,819.44
  5. Step 5: Solve for x
    x = 119,464,107,819.44/445,145.12
  6. Step 6: Final answer
    x = 268,371.15

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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.