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Finding the Fourth Proportional to 278,956.75, 384,958.53 and 151,632.37

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Solution

The fourth proportional to 278,956.75, 384,958.53 and 151,632.37 is: 209,251.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,956.75 : 384,958.53 = 151,632.37 : x
  2. Step 2: Convert to fraction form
    278,956.75/384,958.53 = 151,632.37/x
  3. Step 3: Cross multiply
    278,956.75x = 384,958.53 × 151,632.37
  4. Step 4: Simplify right side
    278,956.75x = 58,372,174,255.62
  5. Step 5: Solve for x
    x = 58,372,174,255.62/278,956.75
  6. Step 6: Final answer
    x = 209,251.70

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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.