Home / 278,938.72-384,933.99-151,615

Finding the Fourth Proportional to 278,938.72, 384,933.99 and 151,615

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Solution

The fourth proportional to 278,938.72, 384,933.99 and 151,615 is: 209,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,938.72 : 384,933.99 = 151,615 : x
  2. Step 2: Convert to fraction form
    278,938.72/384,933.99 = 151,615/x
  3. Step 3: Cross multiply
    278,938.72x = 384,933.99 × 151,615
  4. Step 4: Simplify right side
    278,938.72x = 58,361,766,893.85
  5. Step 5: Solve for x
    x = 58,361,766,893.85/278,938.72
  6. Step 6: Final answer
    x = 209,227.92

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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.