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Finding the Fourth Proportional to 321,133.36, 481,998.92 and 163,479.84

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Solution

The fourth proportional to 321,133.36, 481,998.92 and 163,479.84 is: 245,371.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,133.36 : 481,998.92 = 163,479.84 : x
  2. Step 2: Convert to fraction form
    321,133.36/481,998.92 = 163,479.84/x
  3. Step 3: Cross multiply
    321,133.36x = 481,998.92 × 163,479.84
  4. Step 4: Simplify right side
    321,133.36x = 78,797,106,321.77
  5. Step 5: Solve for x
    x = 78,797,106,321.77/321,133.36
  6. Step 6: Final answer
    x = 245,371.91

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1.5x scale

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.