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Finding the Fourth Proportional to 225,612, 338,438.90 and 73,809.92

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Solution

The fourth proportional to 225,612, 338,438.90 and 73,809.92 is: 110,721.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,612 : 338,438.90 = 73,809.92 : x
  2. Step 2: Convert to fraction form
    225,612/338,438.90 = 73,809.92/x
  3. Step 3: Cross multiply
    225,612x = 338,438.90 × 73,809.92
  4. Step 4: Simplify right side
    225,612x = 24,980,148,133.89
  5. Step 5: Solve for x
    x = 24,980,148,133.89/225,612
  6. Step 6: Final answer
    x = 110,721.72

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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.