Home / 339,871.24-509,508.78-129,369.16

Finding the Fourth Proportional to 339,871.24, 509,508.78 and 129,369.16

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Solution

The fourth proportional to 339,871.24, 509,508.78 and 129,369.16 is: 193,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,871.24 : 509,508.78 = 129,369.16 : x
  2. Step 2: Convert to fraction form
    339,871.24/509,508.78 = 129,369.16/x
  3. Step 3: Cross multiply
    339,871.24x = 509,508.78 × 129,369.16
  4. Step 4: Simplify right side
    339,871.24x = 65,914,722,881.22
  5. Step 5: Solve for x
    x = 65,914,722,881.22/339,871.24
  6. Step 6: Final answer
    x = 193,940.28

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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.