Home / 345,791.20-518,479.44-135,178.24

Finding the Fourth Proportional to 345,791.20, 518,479.44 and 135,178.24

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Solution

The fourth proportional to 345,791.20, 518,479.44 and 135,178.24 is: 202,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,791.20 : 518,479.44 = 135,178.24 : x
  2. Step 2: Convert to fraction form
    345,791.20/518,479.44 = 135,178.24/x
  3. Step 3: Cross multiply
    345,791.20x = 518,479.44 × 135,178.24
  4. Step 4: Simplify right side
    345,791.20x = 70,087,138,175.39
  5. Step 5: Solve for x
    x = 70,087,138,175.39/345,791.20
  6. Step 6: Final answer
    x = 202,686.30

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1.5x scale

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.