Home / 278,432.12-384,237.60-151,107.86

Finding the Fourth Proportional to 278,432.12, 384,237.60 and 151,107.86

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Solution

The fourth proportional to 278,432.12, 384,237.60 and 151,107.86 is: 208,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,432.12 : 384,237.60 = 151,107.86 : x
  2. Step 2: Convert to fraction form
    278,432.12/384,237.60 = 151,107.86/x
  3. Step 3: Cross multiply
    278,432.12x = 384,237.60 × 151,107.86
  4. Step 4: Simplify right side
    278,432.12x = 58,061,321,467.54
  5. Step 5: Solve for x
    x = 58,061,321,467.54/278,432.12
  6. Step 6: Final answer
    x = 208,529.54

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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.