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Finding the Fourth Proportional to 278,793.88, 384,734.55 and 151,468.36

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Solution

The fourth proportional to 278,793.88, 384,734.55 and 151,468.36 is: 209,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,793.88 : 384,734.55 = 151,468.36 : x
  2. Step 2: Convert to fraction form
    278,793.88/384,734.55 = 151,468.36/x
  3. Step 3: Cross multiply
    278,793.88x = 384,734.55 × 151,468.36
  4. Step 4: Simplify right side
    278,793.88x = 58,275,111,323.84
  5. Step 5: Solve for x
    x = 58,275,111,323.84/278,793.88
  6. Step 6: Final answer
    x = 209,025.79

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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.