Home / 278,690.39-384,579.85-157,832.55

Finding the Fourth Proportional to 278,690.39, 384,579.85 and 157,832.55

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Solution

The fourth proportional to 278,690.39, 384,579.85 and 157,832.55 is: 217,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,690.39 : 384,579.85 = 157,832.55 : x
  2. Step 2: Convert to fraction form
    278,690.39/384,579.85 = 157,832.55/x
  3. Step 3: Cross multiply
    278,690.39x = 384,579.85 × 157,832.55
  4. Step 4: Simplify right side
    278,690.39x = 60,699,218,009.54
  5. Step 5: Solve for x
    x = 60,699,218,009.54/278,690.39
  6. Step 6: Final answer
    x = 217,801.62

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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.