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Finding the Fourth Proportional to 338,679.60, 508,103.76 and 239,034.24

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Solution

The fourth proportional to 338,679.60, 508,103.76 and 239,034.24 is: 358,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,679.60 : 508,103.76 = 239,034.24 : x
  2. Step 2: Convert to fraction form
    338,679.60/508,103.76 = 239,034.24/x
  3. Step 3: Cross multiply
    338,679.60x = 508,103.76 × 239,034.24
  4. Step 4: Simplify right side
    338,679.60x = 121,454,196,112.74
  5. Step 5: Solve for x
    x = 121,454,196,112.74/338,679.60
  6. Step 6: Final answer
    x = 358,610.90

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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.