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Finding the Fourth Proportional to 381,390.66, 526,335.60 and 228,453.75

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Solution

The fourth proportional to 381,390.66, 526,335.60 and 228,453.75 is: 315,276.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,390.66 : 526,335.60 = 228,453.75 : x
  2. Step 2: Convert to fraction form
    381,390.66/526,335.60 = 228,453.75/x
  3. Step 3: Cross multiply
    381,390.66x = 526,335.60 × 228,453.75
  4. Step 4: Simplify right side
    381,390.66x = 120,243,342,435.20
  5. Step 5: Solve for x
    x = 120,243,342,435.20/381,390.66
  6. Step 6: Final answer
    x = 315,276.05

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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.