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Finding the Fourth Proportional to 381,373.64, 526,257.29 and 228,407.90

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Solution

The fourth proportional to 381,373.64, 526,257.29 and 228,407.90 is: 315,179.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,373.64 : 526,257.29 = 228,407.90 : x
  2. Step 2: Convert to fraction form
    381,373.64/526,257.29 = 228,407.90/x
  3. Step 3: Cross multiply
    381,373.64x = 526,257.29 × 228,407.90
  4. Step 4: Simplify right side
    381,373.64x = 120,201,324,355.25
  5. Step 5: Solve for x
    x = 120,201,324,355.25/381,373.64
  6. Step 6: Final answer
    x = 315,179.95

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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.