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Finding the Fourth Proportional to 279,103.06, 418,541.90 and 108,234.81

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Solution

The fourth proportional to 279,103.06, 418,541.90 and 108,234.81 is: 162,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,103.06 : 418,541.90 = 108,234.81 : x
  2. Step 2: Convert to fraction form
    279,103.06/418,541.90 = 108,234.81/x
  3. Step 3: Cross multiply
    279,103.06x = 418,541.90 × 108,234.81
  4. Step 4: Simplify right side
    279,103.06x = 45,300,803,023.54
  5. Step 5: Solve for x
    x = 45,300,803,023.54/279,103.06
  6. Step 6: Final answer
    x = 162,308.51

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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.