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Finding the Fourth Proportional to 381,323.28, 526,302.72 and 220,204.56

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Solution

The fourth proportional to 381,323.28, 526,302.72 and 220,204.56 is: 303,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,323.28 : 526,302.72 = 220,204.56 : x
  2. Step 2: Convert to fraction form
    381,323.28/526,302.72 = 220,204.56/x
  3. Step 3: Cross multiply
    381,323.28x = 526,302.72 × 220,204.56
  4. Step 4: Simplify right side
    381,323.28x = 115,894,258,884.40
  5. Step 5: Solve for x
    x = 115,894,258,884.40/381,323.28
  6. Step 6: Final answer
    x = 303,926.52

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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.