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Finding the Fourth Proportional to 225,389.12, 338,139.84 and 67,620.48

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Solution

The fourth proportional to 225,389.12, 338,139.84 and 67,620.48 is: 101,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,389.12 : 338,139.84 = 67,620.48 : x
  2. Step 2: Convert to fraction form
    225,389.12/338,139.84 = 67,620.48/x
  3. Step 3: Cross multiply
    225,389.12x = 338,139.84 × 67,620.48
  4. Step 4: Simplify right side
    225,389.12x = 22,865,178,287.92
  5. Step 5: Solve for x
    x = 22,865,178,287.92/225,389.12
  6. Step 6: Final answer
    x = 101,447.57

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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.