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Finding the Fourth Proportional to 320,321.70, 479,954.79 and 109,844.10

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Solution

The fourth proportional to 320,321.70, 479,954.79 and 109,844.10 is: 164,585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,321.70 : 479,954.79 = 109,844.10 : x
  2. Step 2: Convert to fraction form
    320,321.70/479,954.79 = 109,844.10/x
  3. Step 3: Cross multiply
    320,321.70x = 479,954.79 × 109,844.10
  4. Step 4: Simplify right side
    320,321.70x = 52,720,201,948.24
  5. Step 5: Solve for x
    x = 52,720,201,948.24/320,321.70
  6. Step 6: Final answer
    x = 164,585.17

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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.