Home / 278,404.20-384,198.78-151,079.76

Finding the Fourth Proportional to 278,404.20, 384,198.78 and 151,079.76

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Solution

The fourth proportional to 278,404.20, 384,198.78 and 151,079.76 is: 208,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,404.20 : 384,198.78 = 151,079.76 : x
  2. Step 2: Convert to fraction form
    278,404.20/384,198.78 = 151,079.76/x
  3. Step 3: Cross multiply
    278,404.20x = 384,198.78 × 151,079.76
  4. Step 4: Simplify right side
    278,404.20x = 58,044,659,474.69
  5. Step 5: Solve for x
    x = 58,044,659,474.69/278,404.20
  6. Step 6: Final answer
    x = 208,490.60

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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.