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Finding the Fourth Proportional to 278,015.71, 383,662.25 and 150,691.39

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Solution

The fourth proportional to 278,015.71, 383,662.25 and 150,691.39 is: 207,954.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,015.71 : 383,662.25 = 150,691.39 : x
  2. Step 2: Convert to fraction form
    278,015.71/383,662.25 = 150,691.39/x
  3. Step 3: Cross multiply
    278,015.71x = 383,662.25 × 150,691.39
  4. Step 4: Simplify right side
    278,015.71x = 57,814,597,743.03
  5. Step 5: Solve for x
    x = 57,814,597,743.03/278,015.71
  6. Step 6: Final answer
    x = 207,954.43

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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.