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Finding the Fourth Proportional to 227,289.12, 340,971.92 and 69,480.68

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Solution

The fourth proportional to 227,289.12, 340,971.92 and 69,480.68 is: 104,232.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,289.12 : 340,971.92 = 69,480.68 : x
  2. Step 2: Convert to fraction form
    227,289.12/340,971.92 = 69,480.68/x
  3. Step 3: Cross multiply
    227,289.12x = 340,971.92 × 69,480.68
  4. Step 4: Simplify right side
    227,289.12x = 23,690,960,862.51
  5. Step 5: Solve for x
    x = 23,690,960,862.51/227,289.12
  6. Step 6: Final answer
    x = 104,232.71

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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.