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Finding the Fourth Proportional to 279,956.58, 419,737.98 and 130,037.70

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Solution

The fourth proportional to 279,956.58, 419,737.98 and 130,037.70 is: 194,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,956.58 : 419,737.98 = 130,037.70 : x
  2. Step 2: Convert to fraction form
    279,956.58/419,737.98 = 130,037.70/x
  3. Step 3: Cross multiply
    279,956.58x = 419,737.98 × 130,037.70
  4. Step 4: Simplify right side
    279,956.58x = 54,581,761,521.85
  5. Step 5: Solve for x
    x = 54,581,761,521.85/279,956.58
  6. Step 6: Final answer
    x = 194,965.10

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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.