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Finding the Fourth Proportional to 259,627.70, 389,441.55 and 170,981.30

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Solution

The fourth proportional to 259,627.70, 389,441.55 and 170,981.30 is: 256,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,627.70 : 389,441.55 = 170,981.30 : x
  2. Step 2: Convert to fraction form
    259,627.70/389,441.55 = 170,981.30/x
  3. Step 3: Cross multiply
    259,627.70x = 389,441.55 × 170,981.30
  4. Step 4: Simplify right side
    259,627.70x = 66,587,222,493.02
  5. Step 5: Solve for x
    x = 66,587,222,493.02/259,627.70
  6. Step 6: Final answer
    x = 256,471.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.