Home / 279,731.36-419,633.68-102,321.92

Finding the Fourth Proportional to 279,731.36, 419,633.68 and 102,321.92

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Solution

The fourth proportional to 279,731.36, 419,633.68 and 102,321.92 is: 153,496.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,731.36 : 419,633.68 = 102,321.92 : x
  2. Step 2: Convert to fraction form
    279,731.36/419,633.68 = 102,321.92/x
  3. Step 3: Cross multiply
    279,731.36x = 419,633.68 × 102,321.92
  4. Step 4: Simplify right side
    279,731.36x = 42,937,723,834.27
  5. Step 5: Solve for x
    x = 42,937,723,834.27/279,731.36
  6. Step 6: Final answer
    x = 153,496.28

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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.