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Finding the Fourth Proportional to 381,311.36, 526,209.48 and 209,230.44

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Solution

The fourth proportional to 381,311.36, 526,209.48 and 209,230.44 is: 288,737.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,311.36 : 526,209.48 = 209,230.44 : x
  2. Step 2: Convert to fraction form
    381,311.36/526,209.48 = 209,230.44/x
  3. Step 3: Cross multiply
    381,311.36x = 526,209.48 × 209,230.44
  4. Step 4: Simplify right side
    381,311.36x = 110,099,037,355.37
  5. Step 5: Solve for x
    x = 110,099,037,355.37/381,311.36
  6. Step 6: Final answer
    x = 288,737.89

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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.