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Finding the Fourth Proportional to 204,906.90, 307,360.35 and 141,921.30

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Solution

The fourth proportional to 204,906.90, 307,360.35 and 141,921.30 is: 212,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,906.90 : 307,360.35 = 141,921.30 : x
  2. Step 2: Convert to fraction form
    204,906.90/307,360.35 = 141,921.30/x
  3. Step 3: Cross multiply
    204,906.90x = 307,360.35 × 141,921.30
  4. Step 4: Simplify right side
    204,906.90x = 43,620,980,440.46
  5. Step 5: Solve for x
    x = 43,620,980,440.46/204,906.90
  6. Step 6: Final answer
    x = 212,881.95

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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.