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Finding the Fourth Proportional to 605,138.60, 907,707.90 and 161,906.60

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Solution

The fourth proportional to 605,138.60, 907,707.90 and 161,906.60 is: 242,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,138.60 : 907,707.90 = 161,906.60 : x
  2. Step 2: Convert to fraction form
    605,138.60/907,707.90 = 161,906.60/x
  3. Step 3: Cross multiply
    605,138.60x = 907,707.90 × 161,906.60
  4. Step 4: Simplify right side
    605,138.60x = 146,963,899,882.14
  5. Step 5: Solve for x
    x = 146,963,899,882.14/605,138.60
  6. Step 6: Final answer
    x = 242,859.90

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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.