Home / 345,839.49-518,839.43-135,479.25

Finding the Fourth Proportional to 345,839.49, 518,839.43 and 135,479.25

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Solution

The fourth proportional to 345,839.49, 518,839.43 and 135,479.25 is: 203,250.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,839.49 : 518,839.43 = 135,479.25 : x
  2. Step 2: Convert to fraction form
    345,839.49/518,839.43 = 135,479.25/x
  3. Step 3: Cross multiply
    345,839.49x = 518,839.43 × 135,479.25
  4. Step 4: Simplify right side
    345,839.49x = 70,291,976,169.43
  5. Step 5: Solve for x
    x = 70,291,976,169.43/345,839.49
  6. Step 6: Final answer
    x = 203,250.29

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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.