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Finding the Fourth Proportional to 339,954.40, 509,980.20 and 115,325.20

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Solution

The fourth proportional to 339,954.40, 509,980.20 and 115,325.20 is: 173,004.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,954.40 : 509,980.20 = 115,325.20 : x
  2. Step 2: Convert to fraction form
    339,954.40/509,980.20 = 115,325.20/x
  3. Step 3: Cross multiply
    339,954.40x = 509,980.20 × 115,325.20
  4. Step 4: Simplify right side
    339,954.40x = 58,813,568,561.04
  5. Step 5: Solve for x
    x = 58,813,568,561.04/339,954.40
  6. Step 6: Final answer
    x = 173,004.29

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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.