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Finding the Fourth Proportional to 381,433.75, 526,394.98 and 211,667.88

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Solution

The fourth proportional to 381,433.75, 526,394.98 and 211,667.88 is: 292,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,433.75 : 526,394.98 = 211,667.88 : x
  2. Step 2: Convert to fraction form
    381,433.75/526,394.98 = 211,667.88/x
  3. Step 3: Cross multiply
    381,433.75x = 526,394.98 × 211,667.88
  4. Step 4: Simplify right side
    381,433.75x = 111,420,906,298.10
  5. Step 5: Solve for x
    x = 111,420,906,298.10/381,433.75
  6. Step 6: Final answer
    x = 292,110.77

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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.