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Finding the Fourth Proportional to 272,644.92, 408,903.80 and 104,103.36

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Solution

The fourth proportional to 272,644.92, 408,903.80 and 104,103.36 is: 156,130.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,644.92 : 408,903.80 = 104,103.36 : x
  2. Step 2: Convert to fraction form
    272,644.92/408,903.80 = 104,103.36/x
  3. Step 3: Cross multiply
    272,644.92x = 408,903.80 × 104,103.36
  4. Step 4: Simplify right side
    272,644.92x = 42,568,258,976.25
  5. Step 5: Solve for x
    x = 42,568,258,976.25/272,644.92
  6. Step 6: Final answer
    x = 156,130.76

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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.