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Finding the Fourth Proportional to 381,405.64, 526,321.44 and 228,450.28

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Solution

The fourth proportional to 381,405.64, 526,321.44 and 228,450.28 is: 315,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,405.64 : 526,321.44 = 228,450.28 : x
  2. Step 2: Convert to fraction form
    381,405.64/526,321.44 = 228,450.28/x
  3. Step 3: Cross multiply
    381,405.64x = 526,321.44 × 228,450.28
  4. Step 4: Simplify right side
    381,405.64x = 120,238,280,338.00
  5. Step 5: Solve for x
    x = 120,238,280,338.00/381,405.64
  6. Step 6: Final answer
    x = 315,250.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.