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Finding the Fourth Proportional to 300,028.80, 449,438.40 and 187,363.20

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Solution

The fourth proportional to 300,028.80, 449,438.40 and 187,363.20 is: 280,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,028.80 : 449,438.40 = 187,363.20 : x
  2. Step 2: Convert to fraction form
    300,028.80/449,438.40 = 187,363.20/x
  3. Step 3: Cross multiply
    300,028.80x = 449,438.40 × 187,363.20
  4. Step 4: Simplify right side
    300,028.80x = 84,208,216,826.88
  5. Step 5: Solve for x
    x = 84,208,216,826.88/300,028.80
  6. Step 6: Final answer
    x = 280,667.11

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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.