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Finding the Fourth Proportional to 279,934.70, 419,902.05 and 255,440.30

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Solution

The fourth proportional to 279,934.70, 419,902.05 and 255,440.30 is: 383,160.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,934.70 : 419,902.05 = 255,440.30 : x
  2. Step 2: Convert to fraction form
    279,934.70/419,902.05 = 255,440.30/x
  3. Step 3: Cross multiply
    279,934.70x = 419,902.05 × 255,440.30
  4. Step 4: Simplify right side
    279,934.70x = 107,259,905,622.62
  5. Step 5: Solve for x
    x = 107,259,905,622.62/279,934.70
  6. Step 6: Final answer
    x = 383,160.45

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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.