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Finding the Fourth Proportional to 339,725.92, 509,650.17 and 139,937.26

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Solution

The fourth proportional to 339,725.92, 509,650.17 and 139,937.26 is: 209,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,725.92 : 509,650.17 = 139,937.26 : x
  2. Step 2: Convert to fraction form
    339,725.92/509,650.17 = 139,937.26/x
  3. Step 3: Cross multiply
    339,725.92x = 509,650.17 × 139,937.26
  4. Step 4: Simplify right side
    339,725.92x = 71,319,048,348.33
  5. Step 5: Solve for x
    x = 71,319,048,348.33/339,725.92
  6. Step 6: Final answer
    x = 209,931.14

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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.