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Finding the Fourth Proportional to 450,951.38, 675,353.39 and 261,011.78

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Solution

The fourth proportional to 450,951.38, 675,353.39 and 261,011.78 is: 390,896.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,951.38 : 675,353.39 = 261,011.78 : x
  2. Step 2: Convert to fraction form
    450,951.38/675,353.39 = 261,011.78/x
  3. Step 3: Cross multiply
    450,951.38x = 675,353.39 × 261,011.78
  4. Step 4: Simplify right side
    450,951.38x = 176,275,190,452.93
  5. Step 5: Solve for x
    x = 176,275,190,452.93/450,951.38
  6. Step 6: Final answer
    x = 390,896.22

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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.