Home / 240,206.47-331,485-131,311.28

Finding the Fourth Proportional to 240,206.47, 331,485 and 131,311.28

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Solution

The fourth proportional to 240,206.47, 331,485 and 131,311.28 is: 181,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,206.47 : 331,485 = 131,311.28 : x
  2. Step 2: Convert to fraction form
    240,206.47/331,485 = 131,311.28/x
  3. Step 3: Cross multiply
    240,206.47x = 331,485 × 131,311.28
  4. Step 4: Simplify right side
    240,206.47x = 43,527,719,650.80
  5. Step 5: Solve for x
    x = 43,527,719,650.80/240,206.47
  6. Step 6: Final answer
    x = 181,209.61

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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.