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Finding the Fourth Proportional to 245,443.60, 367,906.20 and 140,035.60

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Solution

The fourth proportional to 245,443.60, 367,906.20 and 140,035.60 is: 209,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,443.60 : 367,906.20 = 140,035.60 : x
  2. Step 2: Convert to fraction form
    245,443.60/367,906.20 = 140,035.60/x
  3. Step 3: Cross multiply
    245,443.60x = 367,906.20 × 140,035.60
  4. Step 4: Simplify right side
    245,443.60x = 51,519,965,460.72
  5. Step 5: Solve for x
    x = 51,519,965,460.72/245,443.60
  6. Step 6: Final answer
    x = 209,905.52

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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.