Home / 239,986.96-331,222.60-139,443.28

Finding the Fourth Proportional to 239,986.96, 331,222.60 and 139,443.28

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Solution

The fourth proportional to 239,986.96, 331,222.60 and 139,443.28 is: 192,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,986.96 : 331,222.60 = 139,443.28 : x
  2. Step 2: Convert to fraction form
    239,986.96/331,222.60 = 139,443.28/x
  3. Step 3: Cross multiply
    239,986.96x = 331,222.60 × 139,443.28
  4. Step 4: Simplify right side
    239,986.96x = 46,186,765,754.13
  5. Step 5: Solve for x
    x = 46,186,765,754.13/239,986.96
  6. Step 6: Final answer
    x = 192,455.31

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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.