Home / 239,943.38-331,121.86-139,347.86

Finding the Fourth Proportional to 239,943.38, 331,121.86 and 139,347.86

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Solution

The fourth proportional to 239,943.38, 331,121.86 and 139,347.86 is: 192,300.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,943.38 : 331,121.86 = 139,347.86 : x
  2. Step 2: Convert to fraction form
    239,943.38/331,121.86 = 139,347.86/x
  3. Step 3: Cross multiply
    239,943.38x = 331,121.86 × 139,347.86
  4. Step 4: Simplify right side
    239,943.38x = 46,141,122,590.22
  5. Step 5: Solve for x
    x = 46,141,122,590.22/239,943.38
  6. Step 6: Final answer
    x = 192,300.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.