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Finding the Fourth Proportional to 289,620.30, 433,446.30 and 254,190.90

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Solution

The fourth proportional to 289,620.30, 433,446.30 and 254,190.90 is: 380,422.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,620.30 : 433,446.30 = 254,190.90 : x
  2. Step 2: Convert to fraction form
    289,620.30/433,446.30 = 254,190.90/x
  3. Step 3: Cross multiply
    289,620.30x = 433,446.30 × 254,190.90
  4. Step 4: Simplify right side
    289,620.30x = 110,178,105,098.67
  5. Step 5: Solve for x
    x = 110,178,105,098.67/289,620.30
  6. Step 6: Final answer
    x = 380,422.59

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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.