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Finding the Fourth Proportional to 279,723.65, 419,585.01 and 69,361.58

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Solution

The fourth proportional to 279,723.65, 419,585.01 and 69,361.58 is: 104,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,723.65 : 419,585.01 = 69,361.58 : x
  2. Step 2: Convert to fraction form
    279,723.65/419,585.01 = 69,361.58/x
  3. Step 3: Cross multiply
    279,723.65x = 419,585.01 × 69,361.58
  4. Step 4: Simplify right side
    279,723.65x = 29,103,077,139.99
  5. Step 5: Solve for x
    x = 29,103,077,139.99/279,723.65
  6. Step 6: Final answer
    x = 104,042.25

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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.