Home / 345,961.90-518,939.74-109,304.57

Finding the Fourth Proportional to 345,961.90, 518,939.74 and 109,304.57

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Solution

The fourth proportional to 345,961.90, 518,939.74 and 109,304.57 is: 163,955.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,961.90 : 518,939.74 = 109,304.57 : x
  2. Step 2: Convert to fraction form
    345,961.90/518,939.74 = 109,304.57/x
  3. Step 3: Cross multiply
    345,961.90x = 518,939.74 × 109,304.57
  4. Step 4: Simplify right side
    345,961.90x = 56,722,485,136.61
  5. Step 5: Solve for x
    x = 56,722,485,136.61/345,961.90
  6. Step 6: Final answer
    x = 163,955.87

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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.