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Finding the Fourth Proportional to 260,023.60, 389,257.80 and 154,788.40

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Solution

The fourth proportional to 260,023.60, 389,257.80 and 154,788.40 is: 231,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,023.60 : 389,257.80 = 154,788.40 : x
  2. Step 2: Convert to fraction form
    260,023.60/389,257.80 = 154,788.40/x
  3. Step 3: Cross multiply
    260,023.60x = 389,257.80 × 154,788.40
  4. Step 4: Simplify right side
    260,023.60x = 60,252,592,049.52
  5. Step 5: Solve for x
    x = 60,252,592,049.52/260,023.60
  6. Step 6: Final answer
    x = 231,719.71

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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.