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Finding the Fourth Proportional to 381,814.16, 526,889.07 and 212,059.22

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Solution

The fourth proportional to 381,814.16, 526,889.07 and 212,059.22 is: 292,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,814.16 : 526,889.07 = 212,059.22 : x
  2. Step 2: Convert to fraction form
    381,814.16/526,889.07 = 212,059.22/x
  3. Step 3: Cross multiply
    381,814.16x = 526,889.07 × 212,059.22
  4. Step 4: Simplify right side
    381,814.16x = 111,731,682,576.28
  5. Step 5: Solve for x
    x = 111,731,682,576.28/381,814.16
  6. Step 6: Final answer
    x = 292,633.68

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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.