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Finding the Fourth Proportional to 449,281.28, 673,919.20 and 112,320.32

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Solution

The fourth proportional to 449,281.28, 673,919.20 and 112,320.32 is: 168,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,281.28 : 673,919.20 = 112,320.32 : x
  2. Step 2: Convert to fraction form
    449,281.28/673,919.20 = 112,320.32/x
  3. Step 3: Cross multiply
    449,281.28x = 673,919.20 × 112,320.32
  4. Step 4: Simplify right side
    449,281.28x = 75,694,820,198.14
  5. Step 5: Solve for x
    x = 75,694,820,198.14/449,281.28
  6. Step 6: Final answer
    x = 168,479.80

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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.