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Finding the Fourth Proportional to 427,626.72, 641,426.76 and 203,148.72

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Solution

The fourth proportional to 427,626.72, 641,426.76 and 203,148.72 is: 304,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,626.72 : 641,426.76 = 203,148.72 : x
  2. Step 2: Convert to fraction form
    427,626.72/641,426.76 = 203,148.72/x
  3. Step 3: Cross multiply
    427,626.72x = 641,426.76 × 203,148.72
  4. Step 4: Simplify right side
    427,626.72x = 130,305,025,267.75
  5. Step 5: Solve for x
    x = 130,305,025,267.75/427,626.72
  6. Step 6: Final answer
    x = 304,716.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.