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Finding the Fourth Proportional to 259,370.91, 389,023.56 and 69,846.40

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Solution

The fourth proportional to 259,370.91, 389,023.56 and 69,846.40 is: 104,760.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,370.91 : 389,023.56 = 69,846.40 : x
  2. Step 2: Convert to fraction form
    259,370.91/389,023.56 = 69,846.40/x
  3. Step 3: Cross multiply
    259,370.91x = 389,023.56 × 69,846.40
  4. Step 4: Simplify right side
    259,370.91x = 27,171,895,667.46
  5. Step 5: Solve for x
    x = 27,171,895,667.46/259,370.91
  6. Step 6: Final answer
    x = 104,760.77

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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.