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Finding the Fourth Proportional to 381,222.72, 526,111.20 and 220,107.24

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Solution

The fourth proportional to 381,222.72, 526,111.20 and 220,107.24 is: 303,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,222.72 : 526,111.20 = 220,107.24 : x
  2. Step 2: Convert to fraction form
    381,222.72/526,111.20 = 220,107.24/x
  3. Step 3: Cross multiply
    381,222.72x = 526,111.20 × 220,107.24
  4. Step 4: Simplify right side
    381,222.72x = 115,800,884,165.09
  5. Step 5: Solve for x
    x = 115,800,884,165.09/381,222.72
  6. Step 6: Final answer
    x = 303,761.76

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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.