Home / 279,934.20-419,901.30-190,121.40

Finding the Fourth Proportional to 279,934.20, 419,901.30 and 190,121.40

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Solution

The fourth proportional to 279,934.20, 419,901.30 and 190,121.40 is: 285,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,934.20 : 419,901.30 = 190,121.40 : x
  2. Step 2: Convert to fraction form
    279,934.20/419,901.30 = 190,121.40/x
  3. Step 3: Cross multiply
    279,934.20x = 419,901.30 × 190,121.40
  4. Step 4: Simplify right side
    279,934.20x = 79,832,223,017.82
  5. Step 5: Solve for x
    x = 79,832,223,017.82/279,934.20
  6. Step 6: Final answer
    x = 285,182.10

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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.