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Finding the Fourth Proportional to 279,531.60, 419,297.40 and 255,037.20

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Solution

The fourth proportional to 279,531.60, 419,297.40 and 255,037.20 is: 382,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,531.60 : 419,297.40 = 255,037.20 : x
  2. Step 2: Convert to fraction form
    279,531.60/419,297.40 = 255,037.20/x
  3. Step 3: Cross multiply
    279,531.60x = 419,297.40 × 255,037.20
  4. Step 4: Simplify right side
    279,531.60x = 106,936,434,863.28
  5. Step 5: Solve for x
    x = 106,936,434,863.28/279,531.60
  6. Step 6: Final answer
    x = 382,555.80

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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.