Home / 220,839.40-331,259.10-154,138.60

Finding the Fourth Proportional to 220,839.40, 331,259.10 and 154,138.60

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Solution

The fourth proportional to 220,839.40, 331,259.10 and 154,138.60 is: 231,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,839.40 : 331,259.10 = 154,138.60 : x
  2. Step 2: Convert to fraction form
    220,839.40/331,259.10 = 154,138.60/x
  3. Step 3: Cross multiply
    220,839.40x = 331,259.10 × 154,138.60
  4. Step 4: Simplify right side
    220,839.40x = 51,059,813,911.26
  5. Step 5: Solve for x
    x = 51,059,813,911.26/220,839.40
  6. Step 6: Final answer
    x = 231,207.90

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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.