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Finding the Fourth Proportional to 279,956.35, 419,936.10 and 69,594.29

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Solution

The fourth proportional to 279,956.35, 419,936.10 and 69,594.29 is: 104,391.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,956.35 : 419,936.10 = 69,594.29 : x
  2. Step 2: Convert to fraction form
    279,956.35/419,936.10 = 69,594.29/x
  3. Step 3: Cross multiply
    279,956.35x = 419,936.10 × 69,594.29
  4. Step 4: Simplify right side
    279,956.35x = 29,225,153,938.97
  5. Step 5: Solve for x
    x = 29,225,153,938.97/279,956.35
  6. Step 6: Final answer
    x = 104,391.82

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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.