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Finding the Fourth Proportional to 203,309.73, 304,325.20 and 139,758.14

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Solution

The fourth proportional to 203,309.73, 304,325.20 and 139,758.14 is: 209,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,309.73 : 304,325.20 = 139,758.14 : x
  2. Step 2: Convert to fraction form
    203,309.73/304,325.20 = 139,758.14/x
  3. Step 3: Cross multiply
    203,309.73x = 304,325.20 × 139,758.14
  4. Step 4: Simplify right side
    203,309.73x = 42,531,924,842.64
  5. Step 5: Solve for x
    x = 42,531,924,842.64/203,309.73
  6. Step 6: Final answer
    x = 209,197.68

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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.