Home / 239,983.96-331,218.46-139,440.28

Finding the Fourth Proportional to 239,983.96, 331,218.46 and 139,440.28

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Solution

The fourth proportional to 239,983.96, 331,218.46 and 139,440.28 is: 192,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,983.96 : 331,218.46 = 139,440.28 : x
  2. Step 2: Convert to fraction form
    239,983.96/331,218.46 = 139,440.28/x
  3. Step 3: Cross multiply
    239,983.96x = 331,218.46 × 139,440.28
  4. Step 4: Simplify right side
    239,983.96x = 46,185,194,803.57
  5. Step 5: Solve for x
    x = 46,185,194,803.57/239,983.96
  6. Step 6: Final answer
    x = 192,451.17

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1.5x scale

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.