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Finding the Fourth Proportional to 260,849.40, 391,446.90 and 148,529.40

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Solution

The fourth proportional to 260,849.40, 391,446.90 and 148,529.40 is: 222,892.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,849.40 : 391,446.90 = 148,529.40 : x
  2. Step 2: Convert to fraction form
    260,849.40/391,446.90 = 148,529.40/x
  3. Step 3: Cross multiply
    260,849.40x = 391,446.90 × 148,529.40
  4. Step 4: Simplify right side
    260,849.40x = 58,141,373,188.86
  5. Step 5: Solve for x
    x = 58,141,373,188.86/260,849.40
  6. Step 6: Final answer
    x = 222,892.49

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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.