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Finding the Fourth Proportional to 279,371.40, 419,057.10 and 110,931.90

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Solution

The fourth proportional to 279,371.40, 419,057.10 and 110,931.90 is: 166,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,371.40 : 419,057.10 = 110,931.90 : x
  2. Step 2: Convert to fraction form
    279,371.40/419,057.10 = 110,931.90/x
  3. Step 3: Cross multiply
    279,371.40x = 419,057.10 × 110,931.90
  4. Step 4: Simplify right side
    279,371.40x = 46,486,800,311.49
  5. Step 5: Solve for x
    x = 46,486,800,311.49/279,371.40
  6. Step 6: Final answer
    x = 166,397.85

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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.